how coating titanium dioxide? Answered

 Dear all...  I like to build an air purifier filter with UVCm lamp +titanium dioxide. Please help me to know how I can stick titanium dioxide powder on surface aluminum or cardboard .Thank you in advance.

Question by lam   |  last reply


Solar Cells Coating? Answered

Hi Guys! A few weeks ago I found an auction on ebay, bid, and won myself some big old pack of solar cells. Now these panels are wafer thin, no coating or covering. Additionally, I need to put the wire collecting ribbons on myself. The only problem with these is that they are incredibly fragile. What can I coat them with to protect them? Is there any spray or acrylic or resin that you use to protect them? Thanks

Question by transistorguy   |  last reply


Help with my Harbor Freight powder coater? The powder doesn't stick. Answered

The powder no longer sticks to the metal I'm trying to coat. I can't figure out why. The tip still sparks when I touch it to the grounded metal. The gun is clean. I bought fresh powder. I changed the disposable air drier. Everything looks like it's working. Does anyone have any experience with these? Know anything I can check or test?This is driving me crazy. Thanks!

Question by Amir   |  last reply


Why was there plastic on my plasma ball? Answered

So I have had my plasma ball for about a year now and it wasn't very clear anymore.  At the top I noticed that there was some kind of coating on it after washing about 5 times with windex.  The ball worked fine were there wans't coating anymore so I rubbed it all off, it was plastic and now my hands are all sparkly.  Was that ok or am I risking major health problems.  Also, what is it for. So also, if your plasma ball is murky this is why.

Question by jj.inc   |  last reply


how do you clear coat something?

How to apply?

Question by tanner23   |  last reply



Coaxial cable to UHF coat hanger antenna?

Greetings, I need to make a UHF TV antenna.  The TV has a coaxial plug on the back, and I have coaxial cable, but I do not have an adapter. What is inside the adapters that go from coaxial cable to two wires?  Any electronics?  Do the two antenna leads just connect to the pin in the center? Thanks

Topic by NeuroPulse   |  last reply


Safe adhesive/sealant for coating flash drives?

I've sen a few Instructables on modding your USB flash drives, and was plan on modding one of mine. I've ordered some Bullet Bill toys and have an old flash drive ready to go. I figure "liquid electrical tape" would be the best option for filling the gaps and sealing the drive into the toy, but are there any safe cheaper options? I don't know if it's relevant (I know bugger all about electronics), but here's a picture of the flash drive in question:

Question by Shampyon   |  last reply


How can I color aluminum wire without annodizing?

I bought a spool of 14 gauge aluminum wire for chain maille. My goal is to have alternating black and natural colored rings used for the maille. In a household metal working book I found from the 80's, they said to,"Mix 2 tablespoons lye into 1 quart cold water. Add aluminum part for 1-2 minutes. Submerse part into household dye mixed according to manufacturers directions until desired depth of color is achieved. Rinse in cold water".I tried this method using RIT black household dye; however, it was not successful. I am trying to dye the wire both RED and BLACK. If no method for the red is found, I can purchase a short length of anodized red wire; however, If there are any chemical reactions for turning the wire black, that would be great. Thanks!!

Question by kreationism   |  last reply


How to get a finished look on bare electronics by coating? Answered

Hello and thank you for the help. See image, forgive crude rendering... I'm going to to connect two USB females in order to hold two USB males. I want to disguise the ugly metal part which is usually inside the PC port with some sort of material. The only electronics involved might be bridging the females, but not a must if it will disturb the coating process (e.g. if heat is required). I'd appreciate a pointer, and thanks again for your help. Y.

Question by yanivn   |  last reply


Firesleeve(Silicone Coated Fibreglass Sleeve)http://www.hsinsulation.com?

Firesleeve(Silicone Coated Fibreglass Sleeve) 1)Silicone rubber coated fiberglass sleeve(sleeving) - Protects hoses, cables and wires. from molten metal splash, high heat hazards and occasional exposure to flame, in steel plants, glass plants, foundries, cutting and welding shops and wherever hoses, cables and wires may be exposed to high heat or occasional flame. Fireproof sleeve also may be used to insulate your race cars plumbing system. 2)Continuous protection to 500F, short term exposure thru 2200F Extremely flexible and conformable through out entire size range at temperatures -65F thru 500F. 3)Impede heat radiation of flame 4)Protect operator from burning by hot pipe 5)Impede heat lost and favor to saving energy 6)Moisture-proof, water-proof, resistance to oil and pollution 7)Color: red and blue mainly. 8)Bore diameter(mm):15,20,25,30,35,40,45,50,55,60,65,70,75,80,90,100,110,120,130;(Sizes from 1/4" I.D. to 6" I.D.) Yancheng Hengsheng Insulation Co.,Ltd Web: http://www.hsinsulation.com Email: hsinsulation@hotmail.com Tel :+86-139-61986280 Fax : +86-515-88430696

Question by firesleeve 


How can i use silver from x ray films to eletroplate a soldering iron tip?

That's it: i have a ton of old/useless x-ray films and a bare copper iron tip. I usually clean the x ray films with sodium chloride (at 2%, from bleach) to use the pvc sheets to make stencils. Once i left the resulting solution to air dry. It took something like a week for the 25cc of liquid to evaporate and left some crusty, green matter - which, i'm pretty sure,had silver in it. The questions are: what is that solution? Can it be used in eletroplating as-is or need to be refined? If yes, how? Put your brains to work, my friends! A silver-coated soldering iron tip is something of our common interest, i believe.

Question by vinacarv   |  last reply


While doing electrolysis on some pennies, (Pence?) I noticed a copper coating on my + copper lead?

Is there something special about this? Also, Is this a form of electroplating? I doused some pennies in vinegar for about a week+ and tried this. On a thinner, magnet wire lead, (copper +) it had what I beleive is a dark green copper salt, that burned blue. Can anyone Identify this? Also, I changed the diameter of the lead, to about 1/16 - 1/8 (Copper lead, +) and It seemed like that lead was powder coated with copper. Is there a reason it would not be a copper salt? The other was coated with what I think is Zinc.

Question by PKTraceur   |  last reply


how do i seal and coat the inside of my microwave?

The microwave interior (where you put the food) rusted out in one corner i need to fill it (with what ) and coat it to make it look good and be properly sealed but with what do i coat it? so far everything i have used has caught on fire. thank you   

Question by fixitnotbroken   |  last reply




Is there a way to make magnetic gloves coated in liquid nitrogen to control metal?

I know that you can make some metals float by coating the magnet in liquid nitrogen. How can I make a pair of magnetic gloves and will my idea work?

Question by GatorSECChamps   |  last reply


Is there a heat resistant coating I can apply to the inside of my, non-cid headlight housings?

I want to coat the inside of my headlight housings with a, heat resistant, blue liquid to mimic cid headlights. It would save me the price of expensive replacement lamps, but has to be transparent tint.

Question by Hubiewan   |  last reply


How Do I Apply A Simple Glitter Coat to My Car?

I have a white 1993 Buick Lesabre and I just want to spruce it up a little bit. I want to know how to add a coat of glitter to it, and I want to know how to do it myself(the cheapest way). Thanks.

Question by sherrell2   |  last reply


does Indium tin oxide reflect inferred? and is it possible to coat glass with it?

Does Indium tin oxide reflect inferred? and is it possible to coat glass with it? in Wikipedia, it mentions its transparent, and acts like a "medal-like" mirror. this seems promising, but can i coat a fuse like light bulb with it, so it will reflect the inferred radiation back to the filament, heating it up more? i idea is this will help make light bulbs more efficient.  

Question by -max-   |  last reply


Solder Iron Tips: oily, bubbly coating forming... See Pics

Can anyone explain to me what is happening with my soldering iron? It makes it very hard to remove. I thought maybe flux is getting down there somehow but I've been taking care to alway keep the tip down and avoid any excess solder accumulating on the tip (aside from tinning of course). But it's happening again!

Topic by milsorgen   |  last reply


What should I coat the bottom of an Altoids tin with to prevent a short for an electronics project? Answered

I'm about to assemble a DB-9 to USB controller converter so I can play a few old Sega Genesis games again with my Genesis controller. I've decided that I want to try housing it in an Altoids tin, but I'm worried about creating a short.

Question by Xial   |  last reply


whats the best chemicals coat a match with in order to get a green, purple or blue flame?

I am going to make some matches that burn different coloures to make some money at school, and my attempt to make copper carbonate by electrolosis has failed, as it turns out only copper exposed to air during electrolsis carbonated. anyway, i need to know what will make the strongest colour flame on a match stick (probably barbeque matches not normal small ones), so that it is allmost entirely either green, purple or blue. right now i have a 1kg copper rod i found on the roud which i can use to make copper chloride, as i can get that easily, but i have heard that it lets off toxic fume so i am not sure, plus i dont know if the matches will burn hot enoguh to make the copper chloride go green.

Question by oldmanbeefjerky   |  last reply


can i build a 4' x 8' x 5'' expanded polystyrene coated with stucco?

It needs to be able to withstand 90 mph. it will be fastened between two posts

Question by narelmr 


How can I dress up as a space scientist?

I am doing a careers project for school. I am researching being a space scientist. As a part of my presentation, I have to dress up as my career. My only idea is wearing a shirt from the science fair with a rocket on it and a lab coat, but I am not sure whether or not space scientists wear lab coats. Any ideas would be very much appreciated!

Question by cupcake811   |  last reply


What components would be needed to build an ultrasonic thickness gauge to measure paint the thickness of paint coatings?

I need an ultrasonic thickness gauge, they work by sending a pulse through the material being measured (paint in this case). When the pulse strikes a denser material it returns to the sensor, the delay from the time of the pulse being sent to being received gives the depth. I anyone knows the components that would be needed, or ideally, a set of schematics could you be so kind as to help me out. Thank you.

Question by alkem   |  last reply


Silver wire vs. Platinum wire for Hydrogen Fuel Cells

I understand that most proof-of-concept hydrogen fuel cells on instructables use platinum wire. Can I use silver-coated wire in place of it, or rather, just any wire? Platinum wires aren't exactly readily available here in the Philippines, and I just want a good proof-of-concept hydrogen fuel cell that's cheap to produce. The silver-coated wire I'm referring to appears to be some sort of jewelry wire. I'm also wondering as to why most people would use platinum wire (is there a special property platinum possesses that other metals don't?). If I can't use platinum wire, then what can I use? Something preferably cheap and over-the-counter.

Question by nutsandbolts_64   |  last reply


how can I remove an old cell phone's PCB's gold? Answered

I have an old cell phone's PCB and it's coated with gold, can I remove that gold?

Question by tgferreira184   |  last reply


Does electical tape melt easily?

I've coated my usb (the circuit board, split the case) in electrical tape, but the USB gets warm (as expected. Will this damage my USB, despite the fact that it's a useless 128mb one anyway?

Topic by Noodle93   |  last reply


can i build a 4' x 8' x 5'' sign from expanded polystyrene covered with a stucco coating?

It will be fastened between two posts. it needs to be able to withstand 90 mph wind load?

Question by narelmr   |  last reply


RE CHROMING ZINC ALUMINIUM

I am looking for info on how to restore zinc aluminum car parts . like the automobile horns they tend to oxidize AND do not stand up to the Chemical's when re chroming. I be-leave that there is a process that will give them, a coating that can be used that will take the chroming posses   Regards John .

Question by Johnbowman   |  last reply


How can I make steel rust quickly to make movie props?

I want to make things out of steel and then coat them in an oxidizing agent of some sort so that they are covered in surface rust and look really aged.

Question by kreationism   |  last reply


Can ink be used to trace a PCB for etching?

I will be making lots of PCBs. I have access to silk screen shop. I was wondering if there is a type of ink or paint i can silkscreen the traces with, rather than using positive coated boards, which cost more.

Question by PuffMag1cDrag0n   |  last reply


Coming Soon: EL wire contest

Starting soon, very soon, here on Instructables will be an EL wire contest! We'll be giving away hundreds of dollars worth of EL wire to the best ideas! In case you don't know, electroluminescent wire, EL wire, is a plastic-coated wire that glows when current is run through it. It comes in many colors, can be powered by batteries, can be used in costumes, and can create animations when controlled by a sequencer. It's really, really fun to play with. To get to know more about EL wire, here are a few Instructables to help you out: how to add EL wire to a coat or other garment How to Solder EL (Electroluminescent) Wire Fire Skirt! Light Up Costume How to make EL Wire Art

Topic by fungus amungus   |  last reply


Find/make frosted glass/plastic tubing

I'm building an audio vu meter, and thought the LEDs would look nice enclosed in some frosted tubing, but I'm having trouble finding any. Something like a fluorescent tube would be perfect, but the coating on the inside of them rubs off fairly easily (is it phosphorous based?), and cutting these things open isn't usually recommended (they have small quantities of mercury in, I believe). It's easy enough to find perspex tubing on ebay, but it's all clear - I really want something translucent, so that the LEDs give a glow of light, rather than a point. Is there something I can coat glass or perspex with to create this effect? Or am I searching for the wrong words? I sometimes see the fluorescent tubes referred to having a satin finish, but that hasn't helped

Topic by psmith37   |  last reply


DIY Electrostatic Spray Gun? Answered

I heard about a new product, but it appears to be only available in Europe and South America (what the...?): http://www.hammerite.com/uk/products/ps_metalmaster.htmlSounds like it uses technology similar to powder coating, but with spray paint. Has anyone used this thing? Does it work? Is it something that could be home-built?

Question by berserk   |  last reply


Motion sensing led strip with dimming on/off?

Hello, I'm making a coat rack that will be hung in a poorly lit hallway. The coat rack will have a basic mountain shape to it and I'd like to put some LEDs behind the mountains that fade on when I approach and fade off after a minute or so. Is this possible?  I'm brand new at this but I'm not afraid to learn. The shelf is about 3 feet long and I thought I'd use about 3 feet total of an LED strip (1' behind the mountain and 2' pointing at the hooks). I'm incorporating a charging station into this as well. I would love for the LEDs to be able to run off a USB charger (like this one from Anker) I'd love some recommendations for how to do this. Arduino? Raspberry Pi? Something else? Thank you in advance. 

Question by JeffB156   |  last reply


high output metal to metal thermoelectric generator?

I saw this on youtube: http://www.youtube.com/watch?v=gNND2pxvxgU He has like 16 wires in this setup, and it generates enough power to light an LED... how much power could you get with some more wires? Say 1600? Does the thickness of the wire matter? Sorry to make you watch the youtube video, if you don't want to, here's what's going on. This guy, Nyle, uses copper wire lengths which he has heated at one end and cooled to coat each end of each length with copper oxide. He then bends the wire so that two ends of copper oxide-coated wire are touching and another end is about 3 inches from the junction. By heating the loose end, and touching one wire to another, he's able to generate enough current to light an LED... pretty neat!

Question by jmlidea   |  last reply


DIY Transistor?

Do you think it'd be possible to make a completely homemade transistor? Not a homemade transistor amp or anything, just the transistor. I know, you could just buy one for cents, but you can also just buy a lot of stuff that you can have fun making. What about turning a normal transistor into a phototransistor? Just sand the coating off the silicon?

Question by LeviMan_2001   |  last reply


Transformer-winding wire

I am going to be hand-wiring up a large lot of transformers. Someone has told me there is an enameled wire (magnet wire) whose coating melts when you dip it in solder (also tinning the copper tip at the same time). What is this type of wire called? I am having a hard time searching for it. Thanks!

Topic by samurai1200   |  last reply


[HEADPHONES] Y-Part Cable Fix

Hi guys! I've read quite a lot of threads on this, but could not find anything related to my problem. I need some help with fixing my headphones. I've managed to break them exactly on the Y part where Left and Right headphones connect to the main cable. I want to solder them however not sure how to connect separate cables... I have a small schema here: http://i58.tinypic.com/24vnptf.png Please note the Copper(orange) and the Blue(Blue) are together: blue is in plastic? coating with wrapped copper around but its two separate wires. Also, the magenta/violet on the diagram represents a white wire, All of the other cables except blue were coated in enamel?. The headphones have a built-in microphone with a button and its sony mdrzx610 model. I really hope there's someone to help me out I need my sounds back!

Topic by KevinasB   |  last reply


EL wire help

Hello, I was wondering whether someone could shed some light on this. I'm making a coat with a design in EL wire. I want to use two colors, and I want to have them both on the strobe setting, so that they flash opposite the other.. so one color being on while the other is off. However I may have to use more than one 'spool' of wire per color. I have a bunch of 9 ft. segments already hooked up to batteries.  You may have to bear with me, I know very little about electronics.. But is there a way I can hook up the segments of one color to each other so that they all flash simultaneously? Or is it worth it just to get longer segments/ make my own, and would the battery have to be much larger in that case? Thanks, any input is greatly appreciated! 

Topic by ohhelloooooo   |  last reply


ALtoids Key security?

I have an idea for a key security device! altoids tin you would use some batteries, and croduce a current through the key via copper wire. if someone (who knows the location of the keys) decides to take it they'll get a shocking suprise! to safely take the keys, just remove bateryes. oh and you mite have to coat the inside of the tin with something

Topic by Sadam and Osama   |  last reply


Prevent rust on a PCB? Answered

How do I prevent rust?  Or should I just not worry about the rust?  I am using single sided board etched with ferric chloride, if that matters. Also I need the copper to conduct "on the top", like if I put a multimeter on a trace it would still conduct.  So I can't use something like a clear coat spray paint. AI

Question by JaredsProjects   |  last reply


Hard disk platters all the same? Anatomy??

Found a broken HDD of 1 Tb today. Always good to take apart for the magnets. The platters were 'slightly' warped; must have been thrown around... The highly reflective platters can always be looped on a string, to chase away crows from my garden.  By now, I have several dozens of old platters.  I was thinking, apart from practicalities like dust and gentle handling, could it be possible to just substitute the platters with  other (old= much lower capacity) platters?  The 1 Tb mechanism, including the heads, would want to format the platters for a Tb amount of storage I assume. If the platters are mechanically identical (I notice they don't have a standard thickness), could this work?  Does anyone know what alloys are used, are they coated, with what??? I see no attraction when I hold a supermagnet to it, but there ought to be some kind of magnetic carrier on it.... The shine on the platters might suggest some exotic metal coating; palladium or something like that....???

Question by BobS   |  last reply


Platinum and fuel cells.

A couple of questions: 1) Does anybody know where to get cheap platinum wire (or platinum coated wire) 2) Does AC work better than DC for electrolysis because neither of the poles will corrode. 3) fuel cells produce around 2 volts, right? 4) Is there a cheaper alternative than platinum for converting hydrogen (and does it need the oxygen?) into water and electricity?

Topic by guyfrom7up   |  last reply


Surveillance Camera System?

Automated pan/tilt surveillance system. Camera will be mounted under/inside a clear dome. Want to add Infra-Red spotlight. If light is mounted inside the dome with the camera, I'll have reflections from the inside surface of the dome causing a problem for the camera. Can't find a "non-reflective" spray coating but even if I do, it will affect the camera view (fuzzy picture) Anybody have any ideas ?

Question by retiredlawman   |  last reply


I want to create an RGB pinspot for my disco ball.

I would love to use a color changing RGB (I will buy the bulb) I just want to find some way to make the spot light as tight a beam as possible? Maybe a fixture that works to tighten the beam or using the frame from a 36 par light and putting it in a reflective coating. Any idea is a good idea (mostly...)

Question by rcroft   |  last reply


Are umbrellas parabolas? Answered

I am trying to make a homemade spotlight and I need a parabolic reflector. Instead of sketching one out on my own (which I'm only semi-confident I can do correctly), I thought it might be possible to use an umbrella coated with tin foil as a reflector. I remember reading that they were parabolic somewhere, but I can't remember where I read it. Are they parabolas?

Question by ElectricUmbrella   |  last reply


Hard drive hydrogen fuel cell? Answered

I have just learnt that hard drive platters are coated in platinum, i know platinum is a catalyst in the reaction between hydrogen and oxygen to for water and produces electricity. This is basically what happens in i hydrogen fuel cell. Has anyone tried using these platters in making a fuel cell and if so how successful was it? Does anyone know if the platinum quantity high enough for this to be viable? I would like to here any ideas on this quite interesting project.

Question by benmurton   |  last reply