Homebrew heaters using resistors?

Hello, First time poster! :) I've been reading up on some projects on this site centered around small homebrew heaters. One I came across I want to adapt is using two resistors and usb port power to make a small coffee mug heater. I'm kind of a novice at electronics, but I'd like to know how to design such a heater with safety and functionality in mind. I also want to control this heater via arduino if I can get a prototype together. Some questions I have: Where to get and what kind of resistors for heaters? How do I figure out what resistors to use based on power. e.g. 12v or USB power? What's a good thing to "encase" the resistors with that will withstand heat? I have thought about using radiator repair epoxy. Thanks for any help!

Posted by Sylvester2009 8 years ago

IR heaters?

Hi all, So I've been searching / reading up on IR heaters and I can easily find IR bulbs /heaters, at 30W+ but the bulb's are pretty big (in regards to what I want). Is there not any smaller-scale /electronic componets for producing IR heat? I know there are IR LEDs but is that the same thing? I'm a bit lost and I swear I came across something before that had an array of small scale IR heating componets, but quite frankly I dont really know what I'm searching for, in regards to a correct name etc... Thanks in advance :)

Posted by lukus001 10 years ago

Inflatible pool water heater?

I have one of those inflatable pools that is 12'-0 x 3'-0. It is in a partially shaded yard and the water does not get very warm. Any ideas on how to warm up the water??? I have thought about using black pvc pipe and mounting that on top of our roof and possibly getting a larger pump to cycle the water. Please help

Posted by dtsteel 9 years ago

Miele washing machine - tripping the electricity (RCD)

Hi I have a Miele W5741 washing machine which is three years old. The other day it tripped the electricity (RCD) I found that it would trip the RCD every time regardless of what program I used. After a few trials I have found the following: if I use the machine and select cold water (no heating of water) then it does not trip the electricity (RCD). So my conclusion is that it is the heater that is causing the washer to trip the electricity! What do you think? I opened up the front to locate the heater. However I don’t see how I can remove the heater as I see no screws! I have attached a pic so you can see the front/heater.

Posted by taylor_bur 2 years ago

solar garage heater

I would like to build a solar panel to heat my garage.  I intend to use a 4x8 used piece of glass, 2x4s, and cardboard tubing.  I can handle this part.  I need help with the air circulation.  I would like to have a solar fan come on when the temp inside reaches 70F.  What parts do I need and how do I connect the parts?

Posted by willpaul 3 years ago

Heating a Water Garden?

Im looking to start a water garden, i dont have much room in my back yard so i have decided on a 8 foot long trench thats about 6 inches wide with a pump to keep the water flowing. the only problem i am having is the growing season here isnt long enough to grow some of the plants that i would like to grow, i was thinking an underwater heater would be a good solution to keep the temperature above freezing and some what extend the growing season. Any thoughts on a good heater set up i could use that would keep the entire trench an even temperature without having to have a seperate heater every few feet?

Posted by Mithrauko 5 years ago

Cordless Car Heater

Hi all, I am camping in my SUV in northern CA. It's a bit cold at night and in the morning, and can stay warm with blankets and a sleeping bag, but, when I get up, and want to change clothes or just sit, it is really cold. It's a 1999 Ford Explorer V6, and I am trying to find or make a device that would heat the interior without turning the engine on.  I've seen handwarmers on amazon and ebay, but I don't see anything that warms that much space without a plug and without CO2 emission. Any ideas?

Posted by pranaman 4 years ago

Heating for outside battery storage compartment.

I have an idea for a wind powered outside LED light for the family's cabin. It would be on a pole and illuminate the pathway, just like a street light would do. So I wanted to have a battery in a box with my wind turbine charging the battery through the day and night. The problem is, it gets really cold sometimes like -36F / -38C and that would kill the battery. So, I also wanted to include some really small, simple heater inside the box. I'm having problems finding anything on what would be the best way to go about this. Wikipedia says heaters are made by resisting current. Are there special types of resisters you add to your DC current to create heat? Thoughts, suggestions, feedback are all welcome. Thanks.

Posted by horsebones 7 years ago

diy pool heater

I have tried so many different ways to heat my pool water and have had little luck. One way I did it was to take about three hundred feet of black 1/2" drip line and run it around the pool rim. I supplied cold water from a smalloutlet attached to the return line,using the power of the filtration pump to move the water from the pool through thecoil and I adjusted the flow to about half of the normal, then at the end I had the heated water re-enter the pool. Iwould say the water got to about 100 degrees, by the time it went through the drip line. The problem is that it wasn'tefficient enough to have any real effect on the pool water temperature which stays at about 60-65 even on the hottest days. I live in the Sacramento area of California, and we get pretty hot summers, usually about 90-105. Any suggestions on how I could make this idea more efficient? My pool water temp is always too cold to swim in, and I have a capacity of 12,000 gallons.

Posted by dandaman1950 6 years ago

Coffee pot space heater

Ok, so this is my first post. I love this site! Anyway, I have a couple of old coffee pots that still heat the water, they just dont make coffee anymore. Im wondering if maybe i could make a very small and very low energy use space heater out of the parts. any ideas on how this might be accomplished would be great.

Posted by kithso 9 years ago

Heat storage device for car cabin heater

I want to increase the heat storage capacity of the existing car heater so that I can run the heater (just the fan and a liquid pump) while the engine is off and so I can have a warm car as soon as I start on a cold day. The current heat storage is the coolant circulating in the engine. I want to increase the capacity of that. Instead of simply attaching a liquid reservoir to the heater circuit (to increase the coolant volume), I was considering using a picnic cooler (insulated) box with a coper tube coiled in it. The box would be filled with oil and paraffin. Paraffin melts ≈ 40° C  and I can take advantage of the latent heat of fusion when the paraffin changes phase. The oil is a medium to suspend the paraffin. I need a recommendation of an electric 12 volt pump to circulate the fluid. I request any other thoughts or criticisms.

Posted by nehmo 7 months ago

18650 Battery Question - Battery Powered Heaters

Hi, I have a question before I begin a project.  I have carbon heater fabric that I want to make heated grips for my snowblower with.  I want to connect the ~0.5 meter x 15mm carbon tape to 2x18650 cells. Are there any precautions I need to take to make sure I dont "short" the batteries and cause damage/explosion etc?  I know technically I am shorting the batteries and making heat.. but how do I know if it is damaging the batteries or putting myself at risk for explosion?  

Posted by DanaF5 2 years ago

Making a dry sauna heater with parts from a 120v hot plate

I have a small closed in shower (31" X 31") and have sealed the 6" opening over the door. It makes for a great steam room. However, I love very hot dry saunas. I have been wondering if I could make a small heater placed in the corner with one or more single burner hot plates and stones. I am wondering if this could be done safely if the AC lines are totally protected. I could easily turn of the power when showering. I welcome any feedback.

Posted by hywmiles 10 years ago

USB heater

Hi everybody! As sais in the title of the topic, I want to realize a USB heater. Let me introduce you to what I think. Last week, I was in the store near high school with some friends, and one of them told me : "It would be cool if we could heat up things in high school, to have like a mini oven directly in our locker, working with battery." Of course, the idea is not to install a oven in our locker, firstly because it would need an incredible battery, and secondly because it would be pretty dangerous.... So here is the idea : the goal is to heat up at least 2 chocolate breads at 60°C. The heating time is not very important, but it has to be under 40 minutes (a system will start the oven before our break). But here is not the most complicated : the oven has to get its power from a usb power bank(I can plug in 2 power banks if necessary). To conclude, I have to fin a solution to heat approximately 1.5L,( but most of it is filled with air), at 60°C, with a power of a maximum of 20W. I saw things to heat coffee by USB, would it work if I take the heating pad? Also, I would like to know how much power I can  get from a power bank (in W), before it to heat too much.

Posted by Romdu421 1 year ago

Peltier Cooler/Heater - Pooling Brainpower

I recently acquired a thermoelectric mini fridge. As a fridge, it doesn't work so very well - it will get down to ~50 degrees with an ambient temperature of 70. So, I took it apart. You know the saying: "If it ain't broke - fix it until it is." So I now have a peltier effect cool/heater. I put my meat thermometer on the cold side with the fan off - and it gets down to freezing (probably a bit below). On the hot side, with a big sink and fan - it seems to be ~85 at it's warmest point (this sink is about half a square foot and an inch deep). Ideas on where to use? It's 110 service.... It literally almost killed me a few days ago when I touched a transistor sink that was part of the rectifier circuit while holding a plate that was grounded (I got knocked out for a few seconds) I've got a couple ideas, I just figured I'd pool brain power and see what happens :p

Posted by trebuchet03 10 years ago

Re-purposing a refrigerator

I am re-purposing a refrigerator to make an egg incubator. What crossed my mind was that perhaps rather than using another source to heat it, perhaps the chiller system (which is fully intact and working) could be reversed? Has anyone on here undertaken a project which involved deliberately causing a refrigerator to work in reverse and so heat up inside? Any information would be gratefully received.

Posted by grumpydad 4 years ago

Battery Powered Water Heater

I want to make a portable steam generator for my school project. So I want to know if there's any battery powered water heater (that can be used to generate the steam) The steam generator device will be used to help you unwrinkle your clothes without ironing them (in case of no electricity or laziness) so I need any battery powered water heater that is strong enough to generate a lot of steam. Please help or give suggestions. Thank you

Posted by WafiqahK 1 year ago

Build a Remote Controlled Car Heater?

Hello I have a car that I want to warm up in the winter. However, installing a remote starter is expensive and complicated since its a VW. Is there a way I could rig up a remote controlled heater inside of it that runs from the cigarette lighter? If I am posting in the wrong place, please tell me.

Posted by LucidDayDream 3 years ago

A non-toxic sealing material that can resist moderate temperatures?

What should I use to seal two glass plates which will make up the sides of a shallow tank of a solar water heater? It should be able to resist temperatures of up to 80 degrees Celsuis.

Posted by mahela007 9 years ago

Burning barrel in the pool

Questions for you scientific types. Would this work: I have a 3,000 gallon inground pool and no heater. If I took a barrel, stuck it in the shallow end just a half inch above being totally submerged, and lit a fire inside it it would it work to heat the water around it and eventually heat up the pool?

Posted by jakeotron 10 years ago

Battery Powered Water Heater

I need some help. Well, I'll be honest, I need a lot of help.  I am trying to heat 1 liter of water running through a small tube that holds 8ml of fluid up by 12C, with a maximum temperature of the heater reaching 60C, and the entire liter needs to be heated within 30 minutes.  In my experiments, the tube holds 8ml of fluid while passing along the 'heater' core, and will pass by the core in a total of 10 seconds. So 8ml heated by 12C in 10 seconds is the limiting factor and multiply that out to cover 30 minutes.  The good news, I have managed to accomplish this feat by wrapping the tube around a curling iron rated at 80W x 110V. End result is 12C rise in output fluid, so I know the theory is completely possible.  However, here's the kicker, the entire system needs to run off of battery power.  So the 2 big questions are: what material should I use as the 'heater core' since I can not use a standard curling iron, and what battery system/configuration should I use (needs to be universal purchase ie, AA, AAA, D, C, 123, 9V, etc) Any help would be greatly appreciated both to my personal safety as I tinker in the garage, and to my wife's sanity as she watches me play with water around plugged in curling irons. :) Thanks in advance. WS. 

Posted by whiskeysausage 5 years ago

Micro Water Heater/Cooler

The title says it all! I'm looking for a small enough unit to carry (under five pounds, optimally), that can either heat or cool any liquids passing through it. I was initially considering cooling plates, but that requires an extra pump and more equipment, which kind of brings me over my weight total.  It's also perfectly fine if both units are separate, as long as I manage to get my hands on something I can use.  Thanks!

Posted by ewitwins 5 years ago

ac or dc or does it even matter

I just saw a video on the web about a heater made out of a coffee can and some other odds and ends. My question is, its a 12v dc contraption. Can I use 12v ac instead ( like splice a 12v plug for a keyboard or something ) or will it not work? I can be more detailed if needed but i didnt want to post where or what the video was exactly since Im not sure Im allowed.

Posted by kithso 9 years ago

Steam radiator made of copper pipe?

I have an old house that uses steam heat and has big, single-pipe, cast-iron steam radiators.  I wanted to replace one of them with something modern looking, and one company sells such radiators, but they are very expensive (sold here http://steamradiators.com/) My question is, can I make one of these  out of large (1.5" or so) diameter copper pipes, soldered together in the same fashion?  I've read that steam systems typically operate at 1psi of pressure, which sounds like it's well below the safety limit of copper pipes and solder joints. I think it would look fantastic, but would it work?

Posted by mhj555 8 years ago

10-15 AMPs w/ potentiometer.

So, as a chemist I thought it would be fun to save some $ by making my own hot plate & magnetic stirrer. I am using Thermoelectric cooling device (TEC) to heat my stirrer, and a small DC motor to stir. Here's the problem - if you've ever taken highschool chemistry you will know that a hot plate with a stirrer has a potentiometer for Temp & Stirring speed - I'd like to do the same! Problem: the TEC takes anywhere from 5-20 amps in operation @ 12 volts DC. Adding a potetiometer to this in parallel is out of the question - I can't fine a potentiometer that can handle greater than 2 watts. ( i may just be looking in the wrong place)... So.. all in all I'm looking for nearly 140-170 watts of power for my heating plate. (The motor will be using much less, almost negligble to the heating plate) So, if I can't put a potentiometer in series for power regulation, how can I get my temperature to vary? If this is going to require a circuit board, I may need some help with a design :)

Posted by GreenD 8 years ago

Using a computer as a space heater?

Anyone have an idea to funnel the hot air from a computer into the surrounding air to be used as a space heater? Its getting cold up here and the only significant source of warmth is my video card.

Posted by emuman4evr 9 years ago

Burning Barrel Pool Heater

I have a 3,000 gallon inground pool and no heater. If I took a barrel, stuck it in the shallow end just a half inch above being totally submerged, and lit a fire inside it it would it work to heat the water around it and eventually heat up the pool?

Posted by jakeotron 10 years ago



Posted by rockytop44 8 years ago

Microwave home water heater

I am interested in any design or work anyone has done to build a microwave type water heater for home use to supplement or replace my existing water heater. So far i have not been able to find any info on a workable design. Send me a message at    jaybird@mtco.com

Posted by thorning 7 years ago

IGBT ZVS Induction Heater?

Among the many tutorials for building an induction heater out on the internet, there are two primary types. Some heaters use a ZVS circuit, and are quite simple but generally limited to a power of around 1000 watts, not enough to melt most metals. Other heaters use PLL controllers and coupling transformers to add charge the primary coil/capacitor loop, and these can be much more powerful but are significantly more complicated (and expensive) to build. It seems the limiting factor in the power of the ZVS circuits is that they can use only 2 MOSFETs, and each must conduct large amounts of current. However, if these could be replaced with IGBTs, which could conduct far more current, a much more powerful ZVS induction heater could be built. Is there any reason IGBTs couldn't be used for a ZVS heating circuit?

Posted by PleaseWork55 1 year ago

Want to know how to build a waste oil pre-heater for a waste oil burning furnace.

Who out there can tell me how to build an oil pre-heater for a waste oil burning furnace. I need to heat the oil so that it will atomize through a Carlyle AF 15 oil burner. Any help would be appreciated.

Posted by rattle09 9 years ago

12v solar to heat water

Im looking to install a hot water cylinder with a 12v immersion heater powered by solar panels(to add wind later) to my hot tub. the idea is to either heat the whole thing all the time or to at least reduce my power usage on the heat side of the running cost. has anyone done anything like this and have any advice? the basic install idea i have is, solar panel/s to a controller controller to a battery controller to immersion heater was also thinking of installing a normally open relay onto the stat of the heater so when it is at temp a fan heater would kick in, but that would be a later install if the water heating would work. any info would be great, if i get enough info i will be doing this and making it into an instructable to further help adopt this to work better. thanks....

Posted by gareth.collier.1985 2 years ago

Battery powered outdoor water dish heater

I have 3 dogs who are kept outside at our Pennsylvania home.  None of the shelters are near an electric source. With winter freezing temperatures on the way, is there a way to keep their water dishes from freezing, especially overnight?   Is there a way I can use one of the electric dog dish heaters to run, say on a battery without it costing an arm and a leg (I have 3 dogs!!)??  I'd buy the dishes at a pet supply place (see site below) for about $30, but running electricity to their kennels is not possible.  Any advice? http://www.petfooddirect.com/product/15045/K&H-Thermal-Heated-Pet-Bowl;?utm_source=nextag&utm;_medium=cse

Posted by mrscloud 6 years ago

Where can I buy myself a steel drum

I'm looking for a steel barrel/drum thing for a project I plan on doing. It's basically a pool heater, using an old car radiator and steel drum. But anyways... I have no idea where I can find one, where carries them or anything of the sort. I'm in central mass if that helps.

Posted by cvxdes 10 years ago

open loop solar water heater that wont freeze

(first paragraph is blah blah,  skip if you wish) As some of you know, there are two approaches to a solar water heater.  One is a close loop with a coolant type liquid that wont freeze.  The problem is that you must build and exchanger of some sort to gather the heat.  Expensive and troublesome.  The second is an open loop in which you circulate the water.  Possibility of freezes.  I have a plan for an open loop system that will latch on to an existing tank and supplement the heat but wont freeze.  What i need is a circuit that will shut off the pump when the sun is down and a water thermostat i can stick in the existing tank that will also shut the pump off.   I think they should be one circuit somehow and should be 12v DC so the pump can be solar powered. They should also be as cheap as possible. I'm not good with circuits so i could use some help.  Perhaps there is some way to reverse a dusk-to-dawn switch.  Please help.

Posted by dggriffi 5 years ago

Using Radiant Alumipex for Solar Pool Heater

Hello everyone, First time here, found lots of info but have question about using this type of piping. I've noticed most people use either black hose or irrigation pipe. I have extra black radiant heat hose and was thinking it would be much better. Its black hose shell with a thin aluminum shielding then thick white pipe inside. It says rated for 200F - 100psi and is 1/2 thick. Brand name caked Weil-Mclain Alumipex for Radiant 1/2nom 1216 PEX-AL-PEX. Can someone please let me know if this would work. Thanks. Brian

Posted by fst2011 1 year ago

Innovative solar powered radiator - will it work?

Ok, so i live in a rented flat (apartment) in London UK. Its a small flat but its old and doesn't have a gas heating system so i'm stuck using expensive electricity especially as the windows are single glazed and winter is on the way! Brrrrr! I desperately need a cheap and effective heatsource Now I know solar water heaters can be suprisingly effective even in the cold and that got me thinking. I have a south facing garden. Couldn't I use the sun to heat the flat? Specifically, I was thinking, can I use a solar water heater to heat an insulated water tank, then use the tank to heat a radiator after dark? (See diagram below) Bear in mind in temperature during the day at the moment is 11 degrees. Will enough heat be generated to make the system viable? I.e. will the water heat the tank hot enough during the day to keep the room warmish for a evening? Other pressing questions: Do i need a commercial panel or will an instructables model work? Oil filled radiator or water filled? Will it auto-siphon or will i need a pump? cheers a million guys and gals!!!

Posted by Tassle 9 years ago

Car Heater/ Warmer

Hello I am Melwin from India I want to create a Car Can/ bottle Warmer/ Heater. My Basic Aim is to make hot water for preparing baby formula my baby when I travel with family in my car. This way I can avoid multiple stops for getting hot water. The commercial versions are available in the Market for a minimum of 3000 Rupees. It is very rare to buy in India My plan is to buy a 220 v 1000Watt Heating Element and cut it to suit to 12v When i measured one test setup with such a coil I get around 1.5 Amps per coil. I didnt have a thermometer to test how hot it gets. Since the car Cigarette Lighter supports 10A. I can easily Add 4-6 Coils of the same length in parallel. Also I can add switch to get different temperatures by adding up coil for each switch. 1-2 Coils = Warm. 3-6 coils = Heat. I dont want it to be a huge cooker. It should be able to heat up a glass (200 ml ) of water till 50- 60 degrees C) A higher version can have a Thermostat to cut off things as a safety feature. If this setup succeeds in boiling up water then I can also have my favourite cup nooodles when on long trips with friends I plan to make a small ceramic frame to mount the heating elemmet. On top I will place a Copper plate. Leaving some gap between the Plate and coil. This entire setup will sit in a Tin can of suitable diameter. I need to think about how i get the ceramic frame to Sit inside the can without touching the Metal. To this Metal can i will attach a handle so that it can be handled when hot. My next question. Where do I place it in my car safely. Suggestions/ Concerns/ Comments please Melwin

Posted by melwinmyworld 6 years ago

Help! Simple but difficult way to semi stick reflective mylar to sheet metal

Wow, the whole question fit in the Topic line!  Amazing! Well, anyway, we're in the process of finalizing a design for a solar hot water heater and are still trying to figure out a good/better way to stick our mylar to our sheet metal.  The sheet is about 10 ft. (sorry about that old fashioned non-metic system usage, but we're on the U.S.-Mexican border and most of the things here in Mexico are still measured in the old system - sigh) by about 4 ft. We have used axle grease - it's o.k. but hard to spread and to make into a VERY thin film.  If the film is not thin bulges appear in the mylar since itself is only about 2 mil thick.  It was good, on the other hand, because it allowed us to position the film correctly on the metal sheet... So, this time we tried silicone - out of a spray can.  It also seems to be good, perhaps a little better since we can spread it with a small paint roller but after several days it's not holding the mylar down well enought (which is probably to be expected since we're using silicone and it's not really sticky). So, we need something which will allow us to position the film (slippery) while being a very, tiny, wee, itsy bitsy sticky in the long run.  It cannot of course be anything biodegradable - like honey - yuck - for obvious reasons (it's going to be in the sun and eventually it will, biodegrade, into who knows what). Maybe silicone and ... Elmer's glue???  We're stuck.  And, after googleing till our eyes have dropped out, we can't find any reflective mylar with a sticky backing.  What the heck do they stick on those window tinting sheets??? Anyway, any help would be greatly appreciated and of course, Have a wonderful afternoon!  :)

Posted by frazelle09 5 years ago

Making a water heater from a soldering iron?

I have got a soldering iron  of  60W, (with a damaged tip). And the main purpose of this project is to make a low power water or coffee heater with things you already have.  Im not a tech savy, but i know that the iron has a 2 pin socket. So, if you dip it directly in water, u'll get a shock if you touch the water. Another modification is needed- the heating rod.  the rod is made of crude iron, which can easily rust, and the tip has some leftover solder, which can poison the coffee.  can someone help in this?

Posted by arnab321 6 years ago

Heat from heating pipe?

Hi there, is it possible to derivate the heat of the heating pipe of an heater to make a water circle (with a pump) to create ones own heater? Because i feel the heating pipe is extremely hot and it's heat for free, so why not using it? The idea is to build something like a water cooling system for the PC but just without the cooling. Can i wrap a cooper pipe around the heating pipe and let water circle with a pump, so the hot water  passes through the "new heater". I dont know what to use as heating object but there will be a way. Any ideas? Is it even possible? Thank you and sorry for my English :D

Posted by Skupidi 5 years ago

anybody using on demand hydrogen to heat hot water?

Hello all - I am interested in either converting an existing gas-fired hot water heater to burn homemade hydrogen gas, or building an on demand heater powered by same. Is anybody doing this? What are the issues, beyond safety of making your own highly flammable gas? lol... I am thinking jet/hole size on the gas burner ring for efficiency considerations, corrosion issues, etc..... THanks in advance... Matt

Posted by concreteblue 2 years ago

Waste Oil Heater

Hey guys, I am looking for some info on how to take an existing oil burner 'gun' (I have an extra Beckett burner) and rig it up to burn waste oil. I make biodiesel already, but I'd like to try burning some waste vegetable oil and motor oil as well. I figured since I have the extra gun, I might as well try it on that. I'm assuming I'll need to set up a pre-heating tank, and some sort of pressurized system to spray the oil since its thicker and heavier. Anyone already done this?

Posted by curdy 9 years ago

In search of an electronics/circuitry mentor.

I am in search of a skilled and knowledgeable person to mentor me through building an incubator. I currently have about 13 eggs that are in various stages of embryonic development and need help building the appropriate incubator. I have a design and more electronic and circuitry components than you can shake a stick at. I have always tinkered and done investigative teardowns on multiple pieces of equipment. I want to eventually build a large, floor based, multi media 3D printer. ( I have been working on a printer that I salvaged.) My interest is more than curiosity, but, I have no starting point to learn in forward gear. I hope to find a person willing to assist my goal accomplishment and guide me through the process. I have more than I need to do the build, I am willing to discuss a trade of components or whatever comes upon need of the interested  mentor. Please contact me as soon as possible as I have lost a lot of sleep, turning the heating pad on every hour to maintain the temperature for the incubation, and am ready to give the eggs to someone else to raise. I prefer not to do that though.  You can reach me via G+ under Kathleen Copeland or through this forum. I will eventually provide pictures and a private contact once a mentor is established.      Thank you.                         

Posted by KathleenC36 2 years ago

How Do I Make A ''Solar Panel''

OK I really need to know how to make a solar panel i just dont know how, the reason being is that i need to make or rather, i want to make a solar pool heater so if you know how to make a solar panel teach me please!!

Posted by rickick 10 years ago

Kombucha or sprout heater from a potpourri pot or other appliance?

I need something to heat a bucket of kombucha tea to 70 degrees Fahrenheit when the heat is off in the kitchen where I will be keeping it. The temperature dips below 50 degrees Fahrenheit in there. I also need something to warm sprouting jars, which I'll be keeping on a shelf that I plan to enclose with a window blind or something else to keep the heat in, but allow ventilation. I don't think I need a thermostat for either of these. The temperature doesn't have to be exact. For the kombucha, I could buy a heating pad for $60 or a heat belt for $20 and pay to have them shipped or I could go to the local aquarium store and buy some fish tank heaters, but I'd prefer to spend less, make something myself out of something old and not support an aquarium store. I'm not a big fan of fish prisons. The thrift stores around here have lots of old appliances for $2-$5 each. I thought I could make heaters using the heating element of one of the small potpourri pots I've seen at Goodwill. I saw online that these pots are heated with a wire wrapped around the (irremovable) pot. Any thoughts on how I could make heaters with this heating element that are safe and not too hot? Any ideas using other appliances? Another option would be to find a cheap heating pad (for heating people) without auto shutoff and use that on the Kombucha at least. I'm not sure that that would be warm enough though, but maybe it's a more worthwhile option that trying to make a heater. What do you think? Should I forget making something for the Kombucha and look for a heating pad instead? Thanks for your help.

Posted by vegagitator 9 years ago

How to add a 30 minute 110v timer into an existing wall heater?

My bathrooms are heated by in-wall electric heaters that are controlled by a rheostat type knob on the devices themselves.  I find that they often accidentally get left on for long periods of time (a safety and energy usage concern).  As such, I would like to add a timer into the existing devices that would cause them to shut off after 30 minutes (the timer would be reset by turning the heater off).  I know that they make wall switches which can accomplish this task, but due to limited wall space I would prefer to not have to wire a new switch to the heaters.  My goal is to find a small circuit board that I can add between the existing control knob and heater.  It would need to be small and heat resistant so that it could be placed inside the heater itself.  Anyway, I have been trying to find such a device online but haven't had any luck finding one that runs on 110v and can be added directly into the existing circuitry.  I was hoping someone on this site could point me in the right direction. The heaters are both tied to the same breaker and are the only things on that circuit so another option would be to place the timer near the electrical panel.  However, this seems less desirable to me as you wouldn't be able to turn on the 2nd heater if the 1st heater had been left on and already tripped the timer.  Please correct me if I'm wrong about this.

Posted by jenkins3333 4 years ago

12v car fan motor for an electric bike

Hi everyone ! I have a project for school that's called "the no project project". I have to do anything I want... so I had the idea of doing an electric bike, or tricycle. So I searched for motors... chainsaw motors... etc ! I have a little budget, and I red it was possible to use car heater fan motor, so I was very interested! But I wanted to have a confirmation from you guys... is a car heater fan motor as powerful as a wheel hub motor? and it is possible to use them as a electric bike motor? Thanks !

Posted by Antoto 7 years ago

DIY inductive heater? (For tire recycling.)

Hey all, I had an idea I wanted to try.  As you may know, recycling tires for projects isn't nearly as cool as it sounds. Since most street tires are steel-belted, about the only part you can even use is the sidewalls. :P My idea for getting the (much cooler) tread part off was to use an inductive heater to heat just the steel belting inside, then (hopefully) just yank the tread layer off with a ginormous pair of pliers. The problem is that actual inductive ranges are a $100+ for even a single burner unit.  Couple that with the very real possibility that my little experiment could damage it beyond repair... not exactly a recipe for success. So now my question: Does anybody have a schematic, instructions, and/or (please, please) instructible for how to build my own inductive heater? Thanks in advance, -me

Posted by PS118 7 years ago

New water heater

Oh please help me decide( and more importantly convince my buzz word influenced wife), I want to replace my current hot water heater, there's nothing wrong with the current one other than being 18 years old, meaning it's a ticking time bomb waiting to flood my house. So anyways, the local gas concern has partnered with local contracters Tankless install $25 a month of 60 months, minimum spec heater, does not include expensive, required stainless steel venting. $450 rebate Tank heater 40 gallon install $10 a month sixty months, includes venting $350 rebate Now the no brainer, my gas bill is averaged at $41 a month, $30 is actual gas charges, Now, the tankless claims to save "up to 50%" which is marketing speak for "does not save 50%" but let's say it does, I would save $15 a month, the difference between the cost of the tankless versus the tank, so it would be 54 months before I started saving money. And since we plan on "upgrading" to a new house before five years (when I've graduated), I will never see those savings. Guess I really should get the tank heater, what do you think?

Posted by Tool Using Animal 10 years ago