Refrigerator Insulation?

Background: I was looking at Costco and they have their big semi-rugged totes on sale this time of year for like $6! The thing I'm pondering is sticking one in inside another and filling the space between with insulation.  But what to put in between? You're probably thinking what I'm thinking, Pinky:  Spray it full of Great Stuff foam. But then I'm looking at my fridge going... that thing is literally freezing inside and not even cool to the touch on the outside!  What kind of insulation do they use?  I'm guessing something trickier than Great Stuff, what with Energy Star ratings and all.  In short:  What is it and where can I get some!??

Topic by PS118   |  last reply


Insulating Ducts

I was thinking about opening one side or the top of the "metal box" that "insulates" the out/intake ducts of HVAC unit, and filling that space with styrofoam popcorn used for shipping fragile stuff. We recently had a couple of trees cut down in the backyard and now our HVAC unit is completely exposed to the sun for most of the day! We bought a shade to set up but I was thinking the styrofoam would just be a little bit more of a help! What do you think? All ideas and advice would be greatly appreciated!

Topic by thickneckarts   |  last reply


is polycaprolactone an insulator? Answered

Is Polycaprolactone ( aka "Friendly Plastic" aka "Instamorph" ) an electrical insulator? Thanks for any info

Question by foobear   |  last reply


DIY Home Insulation

So I know I need to better insulate my attic for the coming winter but, money is tight and the to-do list is growing so I began thinking of alternative or DIY materials to do the job. I know Cellulose insulation is shredded newsprint treated with chemicals to make it mold and creature resistant, and on a small scale maybe that process could be a fun experiment, but not for 1000 sq ft. My next thought (and current favorite) is to acquire styrofoam packing material (box inserts, packing peanuts, un-used food and drink containers) and mill them up to about the in to some uniform size. Then get some cheap plastic bag/ tube material and fill strips with a couple of inches of styrofoam. Then the blanket o’ foam could just be laid out over the existing insulation in the attic. Now, before I start this endeavor I thought I would check with the instuctable think tank to figure out: A) any better ideas 2) what R rating a 3 inch loose fill blanket of styrofoam and plastic would have III) Is this a terrible idea due to moisture being trapped under the plastic Also in a previous forum someone suggested re-routing their dryer vent to the attic and I was wondering if anyone had tried that and/or anyone’s thoughts on that. -Odo

Topic by Odovacer   |  last reply


insulating radiator cover

I'm looking for suggesting for upping the r-value on top of my radiator. Every window in my apartment has a radiator underneath it. I'd like to have some plants by those windows ('cause y'know, they need light and all) but I'm concerned about heat from below drying & killing the plants. A couple of the radiators have covers, but they're metal, so no insulation there. Ceramic pots may provide some insulation, but I'd really like to lay down a layer of some kind of building insulation proper just to be safe. The question is, what kind? Batting won't work, and the foam insulation panels I've seen at the hardware store I know are a fire hazard... plus not too fond of plastic-type materials. My dad suggested something he called "thermal block" which I believe is aerated concrete panels, but which I can't find a source to purchase. I'd like to spend less than $20, preferably less than $10 on this. Please help!

Topic by timeismine   |  last reply


Fully insulated channels?

I was looking to TENS units for experimentation and to try to rid myself of knee pain without meds. I was also looking into potentially building one due to the fact that i could probably do it cheaper depending on how i decide to do it. One of the TENS units i saw said that there was dual channels that were fully insulated, while another one i saw said duel channel but was not fully insulated. What does this fully insulated channel mean, and how would i do that in a DIY TENS unit?

Question by pmk222   |  last reply


Can shredded paper be used for insulation?

I was up in my attic the other day and noticed that one of the rooms in my apartment has no insulation above it and there are a few bare patches over some of the others. could i dump bags of shredded paper up there to add some insulation value?

Question by armourkris   |  last reply


Would bed pillows make good insulation for a roof?

I'm planning an earthbag house, and with its vertical walls, I need a roof. I'm going as cheap as possible, and I wondered if this would serve as a solution? I can get pillows from Walmart for about $5 a piece.

Question by jeniferchurch   |  last reply


Extra Attic Insulation. Can I add polystyrene panels over existing fibreglass batts?

I have access to 6in thick polystyrene panels which I would prefer to re-use rather than take to the garbage dump. Can I lay them over existing fibreglass batts to increase the insulation in the attic ? The house is 4 yrs old so is up to code and is located in Ontario, Canada where the winters are cold. I'm worried about causing a moisture problem.

Question by Blakie2   |  last reply


Attic insulation-should I insulate floor to ceiling?

I am in Conn. and the person helping me has said the roof needs to breath. This is a 4th story on a 3 family house. It is A shaped. I plan on covering the insulation after to finish the space off for storage. I think this will keep the 3rd floor warmer. The floor is insulated, but I wanted to do the wall which makeup the pitch of the roof. I have never heard of the roof needing to breathe before. Is this true or can I go ahead and insulate everything?

Question by Stacey 131   |  last reply



I'm looking for the ideal insulation material to keep heat onto the kiln inside a calciner ?

I'm making a calciner that heats gypsum to a heat of 350 degree Celsius. A burner will be used to heat the rotary kiln to a constant temperature of 350 degree Celsius. I'm looking for the ideal insulation material to make the housing of the keep the heat onto the kiln inside the calsiner. The material must not be to heavy. I'm looking for a material something like fireclay, but something more ideal to build a housing of.  The insulation will be put inside the housing like in the image.

Question by DanieS6   |  last reply


what is the best material to insulate your walls with? does styrofoam work well for keeping your house warm?

I have thick brick outside walls that will freeze in winter. I want to cover them with wood and some insulation material from the inside, hoping some of the heat from my oven will stay in the house. I can imagine styrofoam would work -which would be nice because it's cheap-, but i've never tried it. glasswool is too nasty, I'd rather not get into that. does anyone have experience with this?

Question by vlaafiejaa   |  last reply


Aerogel: Has anyone fooled around with this much ?

A Link to a recent Aerogel articleAnyone mess around with this stuff at all? Is it still a bit on the steep side price-wise ?As a Building materialNotice in the picture how well it insulates against a torch flame:

Topic by Goodhart   |  last reply


Insulating under-house garage?

Hi my house sites on top of the garage and has an open stair and hatch doorway into our living toom. Whats the best way of insulating between my garage and room? Ive been told insulating the garage door is a waste of time and i should concentrate on the connecting door but want to know if anyone has any other suggestions that wont mean i have to buy/make a new door. thanks Mark

Question by worktops   |  last reply


How to insulate a cooler box

I have just bought a plastic cooler box. It is two boxes in one: an inside lining, an air cavity, the outside case and  of course a lid and handle.. I would like to improve the insulation. I have a 750ml can of expanding polyurethane foam which I thought of spraying into the cavity. It will dry in an hour. I can work out the exact volume  to be filled with  the foam by prefilling it with water and measuring the amount of water that pours out of the cavity , but I do not know the best way to apply the foam. Any ideas, please. For example should I wrap the inner box in anything before pushing it into the wet foam that I  spray against the inside of the outer case? Robin

Topic by R89163   |  last reply


Simple electrical insulation question. Answered

If I have a 10AWG insulated solid copper wire and the THHN insulation is rated for 600V, should I worry about a 5000V 60ma current arcing straight through the insulation if its coiled in a helical form?

Question by imMrDude   |  last reply


Transparent Electrical Insulator Film

For a project of mine I need to apply a <1um thick film that is electrically insulating, but transparent to UVC & UVB (and preferably up to visible). Does anyone have any suggestions?

Topic by SillyInventor   |  last reply


Remove insulation from wires

Hey folks, need some ideas to build a simple wire insulation removal system. Has to be so I can peel the inulation off wire from 10 gauge to the ribbon wire in computers as the only way to do it now is burn at that is not a good idea.

Topic by wisconsinjimmy   |  last reply


Need help with DIY cooler insulation

Long time fan, first time poster. I'm looking to convert a cool-looking vintage toolbox into a heavy duty lunchbox. I'm currently prepping the metal for paint and looking into what I can use to insulate the box. I've thought of: * spray foam insulation: Good coverage and thermal protection, but not water-resistant enough (think condensation) * fiberglass insulation (pink stuff): Good, but unsure about how cold it will keep things * styrofoam: probably the one inch sheets used for basement walls below grade. Best solution so far. Before I do something that will likely mean stripping the box clean and starting over, I thought it best to see what others might have to say about this. Any and all help is greatly appreciated!

Topic by Jiggsy   |  last reply


Any simple shed plans using mattresses as insulation?

There are so many free mattresses out there, which would be great for wall insulation, but im trying to figure out a simple method for building walls that will fit them and still be able to attach the drywall/plywood. plus i dont want the walls to be much thicker than the mattresses are already.

Question by    |  last reply


Thermal insulation/cover for heating water bottle

I am building a water bottle that can heat water inside up to 80 degree Celsius for my engineering project. The design of the bottle is as follows:1. an aluminium or steel flask2. heating coil at the bottom of the flask(for heating)3. battery and circuit for the heating coil is located below the heating coil.I want to design a cover such that a person can hold the bottle when the water is hot. Also, i want to protect the circuit and battery at the bottom from the heating coil. How can I do this? (As of now, i was thinking to spray polyurethane foam around the bottle and use a plastic cover. Also, using a polystyrene board below the heating coil to separate it from circuit board/battery). Are there any other insulating materials that can be used? Considerations for cover and insulation: 1. Should be able to hold the bottle 2. Wash the bottle (hence, waterproof)

Question by NagarjunG4   |  last reply


Making my own Window exterior insulation panel insert

I have standard wood windows in our home where we should have spent the money and bought good, double-pane aluminums, but didn't so.... I need some advice. These windows I have are too new, to replace. There are small recesses on the exterior of the wood window frames where I want to insert permanent glass/plexiglass cover for insulation. I need advice on what framing I can use, similar to a poster frame trim where I can install it around the glass, then slide it into the window recess. I’d like to use an aluminum trim that is fairly narrow that would look good. I find framing trim that has slots I can slide the glass into, but what I’m finding is too thick. I only have about quarter inch I can insert to. Any advise?

Topic by opc167   |  last reply


Could one insulate their attic and/or walls with those stupid plastic grocery bags...safely and effectively, that is?

I have switched to some awesome reusable bags I bought at Office Depot that have a little bag that clips onto your purse or belt-loop. But I joke to the grocery clerks (when they look at me funny when I hand them the bags and say no more plastic) that if I bring home 1 more plastic bag I'm going to drill a hole in my wall and start stuffing them in for insulation...my question is...Could I Do That? Safely first of all, but also effectively? This would be a HUGE find if it is...We could hit a planetary Royal Flush...Reducing our energy consumption by cheaply over-insulating our homes (an option that would make it possible for poor folk to take advantage too) AND getting those pesky bags off our streets, out of our oceans thereby reducing pollution and halting the devastating effects they have had on the sea life, AND reduce the space they take up in our landfills, PLUS with this as an alternative to having to turning them in, the current backlog of "recycled" bags piling up because this economic down slide reduces the amount of these goods that China is importing to turn into future landfill occupants. So can it be done?

Question by beingteri   |  last reply


Help reducing energy bills in rented house?

Hello! I have lived in the same house for the past two years, and in the winter our energy bills get ridiculous. It is an old house, the main part being built in 1902. We plan on doing the bubble-wrap window insulation on every window in the house and adding some weather stripping, wearing layers ourselves, and I plan on getting an electric blanket in my room to turn on just before I go to bed, and turn off once the bed is heated up. (My room is the only room on the 2nd floor and gets very cold. The previous tenant of this room used a space heater, but I think they are pretty inefficient.) Are there any other cheap ways to lower heating costs? They guy that owns our house is really stingy, and I highly doubt any requests for better insulation or a newer thermostat will be answered. Thanks in advance!

Topic by GraduallyGreener   |  last reply


INSULATION.. Any way to make ATTIC and WALL INSULATION with recycle Items ???

Anyone knows any way of making cheap or free attic and wall insulation from recycle items? I know of a company that makes it out of recycle shreaded jeans. But then with what will I shread them and what will I wear after shreading them?...lol It will cost me Over $600.00 for a 30x60 ft attic and thats the cheapest being on sale now at Lowes and Home Depot installing it myself. The spray on foam insulation cost an arm and a leg.. Then again I will need them for making my other projects.. haha. I'm sure someone out there knows a way of making it or may have an idea of makin it with recycle material.. thanks.. This will be a a cool experiment or may I say a warm one.. =- }

Question by PitStoP   |  last reply


Insulating tape, better than electrical tape

I'm looking for an electrical insulating tape that I can put over some exposed wire that will affix and stay put on plywood. Right now I'm using electrical tape, but the adhesion to the plywood surface isn't working that well. Anyone out there have ideas or suggestions?

Topic by phidgetsinc   |  last reply


What types of oil can be used for high voltage transformer insulation?

I am modifying microwave transformers for a higher voltage to drive a Tesla coil and I need to know what kind of oils for example vegetable or paraffin can be used for high voltage insulation in the transformer to protect it? To what voltage will it insulate?

Topic by The MadScientist   |  last reply


How do I strip a small amount of insulation from the MIDDLE of a wire? Answered

I have a plan for a small strip of low-voltage lights. I want to solder in-line to the main wires, so I need to strip about 1/2" of insulation from the wire at some distance from the end. What is the best way to do this with minimal damage to the copper core? Graphically: ======================---------======================--------======================-------======

Question by yoyology   |  last reply


How to build a water storage tank that will keep still water from freezing? Answered

How much insulation would be needed and and how would you build it? It has to be outside and be able to supply enough water for a family for a few days. Any ideas?

Question by blkhawk   |  last reply



1000's of ice packs + large polystyrene cooler boxes 2 feet cubed. I need a project, or three to consume these. Ideas?

I have 1000's of ice packs, some are thin flexible plastic, others are the thick rigid plastic type. They come inside large polystyrene cooler boxes about 2 feet cubed. I need a project or two or three to consume these. I can get even more but what would be a good use for them? If I can get a project for these then it will save a huge amount of landfill on a continuing basis. I have lots of space so there is no restriction there. Ideas please?

Question by NB GF   |  last reply


Insulating home window tint for cheap?

Winter is coming like they say on the wall...For me it means I need to find some option to increase the insulation rating of these old windows.3mm thick glass in not really fully sealing sliding frames is a pain.For my last place I had the permission to put proper foil on the windows at my costs.I guesstimated what I need and just ordered the required amount on a roll.That was a few years back though and now prices exploded.Last time I had to pay around $3 AU per meter, now the same material is quoted at $14.95 AU per meter :(My windows go from floor to ceiling and at these prices covering them would cost me more than a months rent.I am sure insulating window tint is available outside AU as well.Does anyone know any sources with half decent prices and low shipping costs?Found one supplier in the US willing to ship to AU but was quoted over $100US for the shipping of one roll (120m).Means all up I would be looking at still a bit over $600US plus postage and there must be cheaper options :(

Question by Downunder35m   |  last reply


looking for ideas on fabric composite thermal barriers ie artic sheltering?

Looking for moderately light weight, flexible,  and not too expensive Want to build a modular out building that I can take apart and transport, but be nice and toasty in the winter when using it. Thinking of a yurt type structure, but want to optimize the wall and roof covering

Question by diverorion   |  last reply


How should one insulate a garage door?

There are pre-made kits to insulate most garage doors, and one can also cut "board" style insulation to fit. What is the best insulating material and fit and value for this job?

Question by justible   |  last reply



How to insulate a water pipe in an uninsulated building?

I have a water service pipe in an uninsulated building, how do I keep it from freezing?

Question by beancounter   |  last reply


Is There an Etchant-Resist That Can Be Left On PCB As Insulator?

Howdy is there a kind of resist that can be left on the pcb after etching (except the solder points), as an electrical insulator? can it be used with the photo-etching method, or only heat? thanks

Topic by johnyradio   |  last reply


What's a good way to recolor a wire's insulation? Answered

I'm making a portal-themed project. It uses two wires, ethernet, and USB. I have a blue ethernet cable, so I thought it would be cool to have an orange USB. Anyone know a good way to recolor a cable's insulation? I thought painting would be imperfect, since the original black USB might show through. But if nobody has anything better, then I guess painting would have to be it. Thanks, and, as always, Don't Forget To Be Awesome! EDIT: Could I just use normal household paint?

Question by 4lifenerdfighter   |  last reply


DC motor core insulation from windings? Answered

I have recently attempted to rewind an old 240V AC drill motor to a low voltage DC one. After winding the 12 coils I found that all of the windings were shorted to each other, I'm assuming this is due to the thin enamel coat on my wire breaking against the edges of the steel core. As a result I need to rewind it, but I am unsure what kind of insulation to use, tape, some kind of glue or sealant, varnish, I was thinking a hardware store type product nothing online or that costs a lot. 

Question by The MadScientist   |  last reply


New metal frame house, interior walls and ceiling ideas

Ok, guys I am planning my next house. I want to build a metal single level kit house over a basement.Like most of you, I can't leave well enough alone. I am always thinking about change, i.e. put up a ceiling fan, add recessed lighting, drop a new ethernet line where I need it, etc. So in thinking about the walls and ceiling of the new house I want your input.First I was thinking of making the interior wall height 10', then I can install a drop ceiling at what every level I want. Later, i can change the drop ceiling at will. Above the drop ceiling, on the underside of the rafters, insulate with rigid foam insulation (maybe the top side of the rafters?).Next the walls. I plan to spray foam insulation between the 24" studs. Drywall seems to be too permanent. What could I put up, durable enough for the occasional bumps when installing furniture, but could be removed if something needs to be added behind it? I have a thought about putting up a shelving system, but that wouldn't work on every wall. Again, I appeal to the hive mind for suggestions.Help a DIY addict,Ralph

Question by Manassasralph   |  last reply


Using quickrete to sound proof walls?

After reading online I thought about an easy cheap alternative to lessen the noise in my garage studio room from escaping to the outside world.  After the new construction the smaller space seems to echo much more than before, thus the need for more soundproofing/deadening.  I though about building forms with plywood backing and filling them with readymix quickrete with wire mesh on top.  After fastening the frames onto the brakets I have that will be firmly fastened to the wall in staggered pattern drywall and carpet padding will be applied on top of the plywood side of the form that would be facing toward the middle of the room thus creating a second relatively thick layer of sound deadening with roughly 1 1/2 inched of dead air space trapped between the outer and inner layer walls.  Has anyone ever tried this?   Thoughts, comments, suggestions welcome.  To clarify:  From outside to inside I would have:  Siding - Standard Wrap and OSB - Stud- Moisture Barrier- Insulation - 5/8 Drywall - 1 1/2 inches of dead air space - Wire mesh side of concrete forms 1 in thick - concrete- plywood backing side of form - carpet padding - drywall - carpet   Thanks.  John

Question by jbutzu   |  last reply


Would a glass, vacuum-insulated thermos be able to withstand the extreme cold of liquid-air?

I am in the middle of designing a system to produce liquid air using the von linde process. the termos would not be under any pressure, but it will get quite cold. can a thermos using a glass vacuum insulated inside be able to withstand temperatures below -180 degrees celsius?

Topic by pedrogabman   |  last reply


PVC pipes and winding Tesla coils....

There are still people out there playing with high voltage.And one big problem when it comes to Tesla coils is winding the secondary coil.Now, I won't go into the details and options of the actual winding part, instead I would like to share some tricks that might make things easier for your project.Whether you wind fully by hand or make use of some mechanical winder, magnet wire is a very slippery thing on PVC.For that reason and some others we usually wind as tight and close as possible.Any leftover spaces that you find after the winding is finnished will severly compromise the overall tension of the wire in this region if fixed.Next problem is what many call aging.No matter how good you coat your coil with varnish or paint it will start to degrade over time.I found a simple fix for these problems :)Well, not really that simple but I am too lazy today to make a full Instructable for just an addition that everyone can make in a few minutes....Let me start with idea behind it all:I noticed that no matter how thick the pipe or wire is that there is little to no chance at all to get any of the coating material through the wire and all the way down to the PVC.One coil failed after I abused it so I did some cuts and had a close look with a magnifying glass.The coil itself was really good covered but it was like a sleeve that sits on the PVC with nothing on the underside of the wire except for a few single spots.Some people will now say to just a much thinner mix for the coating to allow the stuff to sweep through but that does not always work.One big issue I noticed is that not all paints or varnishes actually stick to PVC.Especially those non smelling eco friendly ones most places now sell.This means when the coil expands due to the vibrations and heat the wire can simply rattle off the varnish or the coating itself can crack under the stress.So I thought there must be a way to fix this right at the winding stage....PVC is a good insulator too!So why not use PVC instead of messing with other things?My first attempt here works quite well with thin wire and goes like this:Go outside with your winding rig and have a bottle of PVC primer and a little brush or sponge ready as well as some gloves.If you have use a friend, if you have none make a small rig to hold the sponge right in front of your winding area.The key is to keep the sponge wet with the primer so it will wet the pipe properly.Best is to have the speed and distance set so the surface just starts to dry off under the wire.The primer will cause the PVC to soften, so the wire slightly sinks into the surface.An automatic winding rig is best here as it allows for consistency.There is no too much or too little here is nothing drips terribly and your wire sticks without fully sinking in.Once done you can cover the winding with your prefered coating.For thicker wire, lets say 0.3mm or thicker, I now use a similar way but with more preperations:Using some very rough sandpaper on a belt or vibrating sander I create a small pile of PVC dust.If you prefer some fancy color you can use ABS plasic here too and it dissolves in a similar way.The resulting mix should be free of lumps and of even color, if in doubt use more primer.Consistency should be a bit thinner than honey, if yours is too thin you can add more ABS/PVC or let the primer evaporate off while stirring it every now and then.To get a good start I do a few turns dry first with quite a big spacing.When approaching the actual start of the winding area I use some stick tape to make the last alignment and start to apply the mix onto the first bit of the winding area.Some lint free cloth with a bit of primer is used to wipe off any excess towards the still uncovered part of the pipe.Every time the mix on the pipe dries out too fast a brush with some primer is use to wet it.Every time the excess runs out a bit more mix is applied onto the wound area.The key is to only have a small area in front of the winding covered with mix with the most is on the winding and "cleaned" off towards the empty area.This way the entire wire is covered by PVC all around.To finnish off you simply use a brush and paint the mix onto the rotating coil until you have an even finnish.What are the downsides?The primer stinks and is certainly not healthy to breathe in. So good ventilation is a must have and it works better in colder temeratures as it gives you more time.It might require some test runs with braided fishing line or similar to get a feeling for how much mix or primer you need to apply and how much max tesion you can use to preven the wire from sinking in.Any benefits?IMHO using this method makes it possible to get a proper bond between the PVC pipe and the wire.And by using PVC or ABS as the coating there is little to no change material properties.This in return gives far less chances for vibrations or wire expansions that result in failing insulations.The whole thing just is one piece of PVC with the wire embedded in it instead of having a wire on top of the PVC with some coating above. ;)Are there alternatives to the PVC primer?If Acetone is much cheaper than you can use it but the same safety measures apply and the mix might dry a bit quicker.What if I need a break or stop the winding for one reason or another?Simply wipe off all access and stop with just enough tension on the wire so you can star again with no problems.Then start by wetting and applying the mix and continue winding as before.

Topic by Downunder35m   |  last reply


Can I insulate a wall with air pillow cushions?

I want to insulate a wall but don't have much money to spend so i'm trying to find alternative ways to buying insulation from a shop. I have loads of those air pillows/cushions that are used for packaging fragile items in the post and wanted to know if I could use them for insulation? Mainly the effectiveness but also safety. Any comments would be really appreciated.

Question by zach107   |  last reply


say dry silicaWhat do they use in black boxes as insulating material?

Please do not say dry silica / aluminium / tungsten / S_steel. Im looking to insulate electronics from harsh temperature environments and it is crucial to find a light weight, insulating material.

Question by deadend_designs   |  last reply


Is The Insulated Wire In An RCA Cable, The Negative or the Positive One?

I was just trying to build an RCA to USB cable but I am not being able to find the polarities! Please HELP!

Question by mraghib   |  last reply


can fiberglass insulation be used to make a bow and arrow? Answered

I know they sell fiberglass mats that u use with epoxy for making things out of fiberglass but im wondering if i can use fiberglass insulation in place of the mats because i can get insulation for free and the mats r too expensive for me. and also, please dont answer my question by telling me where i can buy the mats or other ways of making a bow, instead, just answer the freakin question or dont reply to this question at all. thanks :)

Question by MisterHankie   |  last reply


What to do with large envelopes insulated with bubble wrap?

So I have a bunch of about 7x8 inch envelopes that have a layer of bubble wrap inside them, because my brother orders Ubuntu and Kubuntu CDs whenever a new version comes out. What should I do with them? I could use them to ship CDs again, but I don't have any need to do that. HALP.

Topic by Aeshir   |  last reply


Can you insulate the primary coil of a Tesla coil?

Hello,    I am trying to build a tesla coil using a new design relating to a thesis paper I am working on. Due to spacial restraints my primary coil will be close to the secondary coil. I know I have seen others use insulated braided copper wire as their primary. I want to stay with 1/4" copper tubing if at all possible so I wanted to ask what affects it would have if I used heat shrink tubing on the copper tubing. I am aware the higher frequency voltage runs along the skin of the tubing since that is least resistive at that point. A for the power and caps I am using the following: three NSTs of which two are 15kv @ 30 miliamps and one 12kv @ 30 miliamps, 13 CD 2000VDC @ .15nf caps on each 15kv NST and 10 of the same caps on the 12kv NST. The spark gap is static for now.  I want to prevent arching as much as possible in the small space. Any advice is greatly appreciated. Some of the information relating to the thesis paper I cannot release due to a serious concern of being scooped before publication.  Thank you. :)

Topic by XsFacade   |  last reply