Electrically Conductive Paint that really works

[@ssiowi]

helpful and a controlled experiment with useful results. thank-you; for shielding the cavity of an electric guitar, the 1oz to 3t mix of acrylic paint to graphite powder requires three to six coats for uniform continuity. results from your silver impregnated paint look far superior. excellent effort, thanks again.

[@flexy456]

I finally received the one from Thailand and was able to repair my keyboard with it. The paste is indeed very good, conducts as well if not better than a high-end paste from Germany. Small downside only that it takes long to dry. (German paste dries in 5-10min, Thailand paste needs 10+hours). But with a blow dryer on low (due to keyboard membrane made from plastic which I didn't want to melt), the Thailand paste can be tried in 4-5 minutes. Overall GOOD. Can recommend.

[@GrantsPassTVRepair]

I'm glad to hear you had the same results.

[@TampaTec]

This video should have more views 👀👀👀

[@GrantsPassTVRepair]

Thanks. The KZbin algorithm is a strange promoter. I've made far less interesting videos that seem to go viral.

[@rtype4930]

Excellent sir ! Thank you for your well explained video !

[@russellborrego1689]

Great video, thank you! Been waiting for this one, actually one of the reason I subscribed. 👍👍

[@GrantsPassTVRepair]

Thank you.

[@ro_ber_to]

Thank you for your videos! If you have time and want to do it, I'd like to see a video about capacitor's esr and how they change behavior when esr goes up, depending on the application. Thank you again and have a great day!

[@carlburgess9635]

I have used conductive paint to repair a vintage volume control pot on an old GE TV. Thanks for the videos. Carl

[@GrantsPassTVRepair]

How? Did you bridge a dead spot on the Potentiometers track?

[@carlburgess9635]

@@GrantsPassTVRepair The open was at the end of the tract, I used conductive paint to make the fix. I got the information from the Radio Museum or Early Television Foundation, can't remember witch one.

[@GrantsPassTVRepair]

@@carlburgess9635 Did you use the silver impregnated paint or some other kind?

[@carlburgess9635]

I used the windshield heater paint, but here is a link that shows the silver impregnated paint. Carl www.radiomuseum.org/forum/repairing_old_potentiometers.html

[@GrantsPassTVRepair]

@@carlburgess9635 Thank you.

[@CubbyTech]

Curious how flexible the conductive paint is after it's dry? I've used a bit of foil tape for remote button backs. At first, I thought you were going to try to fix the flexible button 'board' with conductive paint!

[@marchisio4639]

Great Video👍 I currently need to repair a circuit board foil and need to paint a thin track for it. I bought the conductive silver paint "kemo L100" and it's like water! Do you have a tip for me how I can get the paint thicker like toothpaste or something?

[@GrantsPassTVRepair]

Sorry but I don't have any tips on that. Perhaps you can put more than one coat of conductive paint.

[@gordslater]

nice test - kinda surprising how bad some of those were - 28kOhm is kinda crazy ! I get asked occasionally about those paints and I always say "learn to solder" but for the special case of rare remote control membrane switches that silver paint looks kinda interesting, if only temporarily

[@Yoritomo3800]

Hello Dave, about remote control rubber buttons, don't lose your money buying conductive paint which is awfully expensive, i use since 25 years leaded carbon core of carpenter pencil, I scratch it with a edgy cutter blade abode the button and i apply it correctly using the pencil tip uniformly on the whole rubber surface, it works perfectly for many years .... of course , clean any trace of grease before doing it.

[@dennisqwertyuiop]

good info

[@flexy456]

I have a question re: the silver conductive paint from Thailand from ebay. I successfully repaired a keyboard many times with a conductive silver (German brand) which is a relatively thick one, like a nail polish when you work with it. It also dries fast, in 10 minutes. Could you tell me whether the Thailand one is thick (like Nailpolish) or is it more runny and watery? Because I heard bad things about other conductive paints, like the L100 (Kemo) where people say its impossible to do a fine line (on a plastic sheet etc.) as it is too watery? Can you a trace a fine line (toothpick etc.) on a keyboard membrane with the paint from Thailand and it isn't runny? I'd highly appreciate if you could give me that info. Thanks!!

[@GrantsPassTVRepair]

The paint from Thailand went on thin but still had amazing conductive properties with only one coat. I can't tell how long it will last, but it seemed like it could last a long time, and did not scratch off like the others.

[@flexy456]

@@GrantsPassTVRepair Ok, asked differently: If you'd put a thin line on a plexi sheet and you hold the sheet vertically, would it stay on or would it just run off? :) Anyway, I ordered it as I read so many good reviews about it, including yours. Thanks!! (The German brand which I used in the past, they increased s/h and now intl. s/h alone would be €18 as it's "hazardous goods". So now giving the Thailand stuff a try.

[@GrantsPassTVRepair]

@@flexy456 The silver stuff I showed would not run if I put it on thin. I'd still rather use solder when possible, nevertheless I was impressed with the results.

[@flexy456]

@@GrantsPassTVRepair Ok that sorta helps. Yes, thing is, for some things you can't solder. I am using that stuff to repair broken/dissolved traces on a membrane keyboard. (Don't ask..I am just saying: Cat pee...is the worst substance in existence...)

[@marchisio4639]

Servus Georg, hab deinen Kommentar gerade gelesen. Ich stehe vor dem gleichen Problem: Hab das L100 Kemo und es ist wie Wasser 🙈 Ich möchte eine unterbrochene Bahn (ca.1-2 mm breit) auf einer Leiterbahnfolie reparieren. Keine Chance mit dem wässrigen Zeug was zu gestalten. Hast du einen Tipp für mich, wie ich das Kemo dickflüssiger bekomme? So Zahnpastakonsistenz wäre top. Gruß aus Bayern

[@shubhangibhadoria]

Are silver conductive paints thermally conductive too? If yes, how much is the thermal conductivity?

[@skytvod]

If you paint those rubberized remote pads i wonder if the silver glue will remain stuck on it after 10 or 20 key presses. Will the remote last for another year?

[@GrantsPassTVRepair]

If I had not seen how well the silver impregnated paint stuck to the plexiglass I would be skeptical, but I'm guessing it might be just fine. Perhaps that would make another good video.

[@GrantsPassTVRepair]

I just ran a test where I pressed the silver painted remote control buttons thousands of times and it was still sticking to the rubber. I also found it's important it has reasonable dry time of it doesn't stick well.

[@flexy456]

That's how membrane keyboards work, the contacts and traces on the sheet of PVC (?) are just that, silver conductive paint. It should last "a reasonable amount of time", eg. the expected life-time of a cheap keyboard. Could be a year or two or could be 10 years. But it will wear, at some point. Of course, how well it sticks and how long would depend on the quality and chemical makeup of the silver-paint.

[@GrantsPassTVRepair]

@@flexy456 I understand. I'm very pleased with the stuff I purchased, I wish I had come up with one that had a name brand which I could be sure of its quality every time, but for the time being unknown brand is the best I'm aware of.

[@RaffaelloLorenzusSayde]

What about fitting a mini needle (or it can have several needles) metalic button into the silicone pad to use as a conductor?

[@GrantsPassTVRepair]

I don't fully grasp your idea, but if you're talking about a remote control pad repair, I've heard of some people using tin foil.

[@RaffaelloLorenzusSayde]

@GrantsPassTVRepair thanks I will try this method. I was also thinking of mixing graphite powder with a silicone sealant and adding the mixture to the pads to see if they will bond to it and allow for conductivity since those conductive carbon pills are made from a mixture of 60% VMQ and 40% conductive carbon black.

[@GrantsPassTVRepair]

@@RaffaelloLorenzusSayde Other than the silver paint I demonstrated which I found on ebay, I was disappointed about the performance of the other paints.

[@RaffaelloLorenzusSayde]

@GrantsPassTVRepair the aliminium foil method worked. I whole punched the aliminium foil, put a decent amount of Krazy super glue on the black pad buttons, added the circle aliminium foil, used a eraser on the pencil to press against the alliminum foil and turn clockwise to bond it properly with a smooth base, then I use tweezers to bend the edges below the black pad button because the circle aluminum foil was larger in size and it's extra support as well. Thanks for your help.

[@GrantsPassTVRepair]

Your welcome, and good job on the foil technique.@@RaffaelloLorenzusSayde

[@steadyteddy2552]

2 years late her but wow awesome video thanks 👏👏just subbed 👍

[@koffibanan3099]

Very interesting!! Thanks!

[@davidc9159]

Like the test, thanks for that. How does it fair on a scratch test ? Reason I ask is that I am repairing a watch PCB and the copper pad has come off of the board altogether. The pad had a copper contact which moved over the top of it to make or break the circuit when you are changing the time. So I guess I'm asking how well would this stuff wear ? Fancy giving it a test before I buy some? :-) I was thinking about 5 or six layers ?? Cheers D

[@GrantsPassTVRepair]

The silver conductive paint did real well on the scratch test. So did the stuff for the heater grid repair.

[@grimreboot]

Very good :), would this have worked to repair the chaps flexible pcb pads by chance?

[@GrantsPassTVRepair]

I don't think there was enough of the old circuit trace left to glue onto, but I chose not to take any chances and replaced it with switches since it came out of his excavator.

[@grimreboot]

@@GrantsPassTVRepair thanks for clearing that up :)

[@electronicartis]

It's conductive but can you solder on it just checking.

[@James_Bowie]

No!

[@donparkinson9561]

I certainly enjoy your videos and have been watching them for years. I thought to share with you the videos by Robert Murray-Smith. The following video uses a conductive paint. He created a Dutch oven with the stuff: kzbin.info/www/bejne/o2HUYYCAiJWWpqM Also check out the conductive graphite which he used in other videos to make heated clothing. I am sure you may have a few ideas of your own.

[@GrantsPassTVRepair]

Thanks Don, Believe it or not I was just watching one of his other videos about 10 minutes ago, but I had not seen this one. I have also been thinking about better ways to heat our bodies rather than the whole room. Motor cycle riders often use heated hand grips and gloves, They also sell jackets with built in heaters. Some time ago I made a couple shoe inserts that did a great job of heating my feet using 20 gauge wire and a 12 volt battery. Thanks for info, and I appreciate you subscribing.

[@donparkinson9561]

@@GrantsPassTVRepair I shared this video with another friend who likes to be a disk jockey when she is at music functions. She was giddy when I showed her the LED when it was next to the solar panel. She planned to incorporate it into her presentations and play with it. I like cool stuff like this anytime! My blessings to you and your family this holiday season!

[@GrantsPassTVRepair]

@@donparkinson9561 Hi Don, I'm thinking your comment pertains to the video I made called "Sound from a solar panel" where I demonstrated how a solar panel can be used to convert light fluxuations into sound. at this link. kzbin.info?search_query=sound+from+a+solar+panel. Merry Christmas.

[@donparkinson9561]

@@GrantsPassTVRepair yes Dave, I enjoyed that video and it is the one I forwarded to a friend of mine. May you have a good Christmas and New Years. I look forward to more of your presentations. Every Christmas is a celebration I am happy to be present for. I do so love the snowfall and to walk on it with my boots, listening to the crunch of the snow under my weight. If you feel yourself feeling a tickle in your throat, take as many drops of oil of oregano under your tongue. I prefer to dilute it with water after it is in my mouth, and then swallow. That is enough to scare away any bugs in your system and return you to health, I have found.

[@GrantsPassTVRepair]

@@donparkinson9561 Thanks for the tip. I've used oregano oil, but what I've found to be helpful if I feel a cold coming on is doing less starchy foods and dairy or sugar.and making a few fruit smoothies.

[@James_Bowie]

Available from this guy's eBay shop: siambkk ... and he has it in varying weights of silver content from 3g up to 15g.