Wildguzzi.com

General Category => General Discussion => Topic started by: brider on November 21, 2018, 08:16:05 AM

Title: NGC - Need a conductive adhesive...
Post by: brider on November 21, 2018, 08:16:05 AM
...that will cure in low temps to re-bond the electrical clip to my car rear-window defroster grid.

Permatex (I think) makes an epoxy for just this application, but it needs 50-70 deg temps to cure properly, and I ain't got that in my garage now:

https://www.permatex.com/products/specialized-maintenance-repair/defogger-repair/permatex-rear-window-defoggerelectrically-conductive-tab-adhesive/

Has anyone used a different conductive adhesive that might cure at a lower temp? I have to ask before rigging up a hair-dryer to blow on the area for a couple of days.

Thanks,
Title: Re: NGC - Need a conductive adhesive...
Post by: Wayne Orwig on November 21, 2018, 10:35:38 AM
I have a conductive paint, that dries like any normal lacquer. I have one that is copper filled, and one that is nickel filled. You can use them to repair damaged spots in the grid, but I would not call them adhesives.

I would use an extension cord, hair drier, and that epoxy.
Title: Re: NGC - Need a conductive adhesive...
Post by: Toecutter on November 21, 2018, 10:59:49 AM
A propane tank-top heater would cut that time down considerably.
Title: Re: NGC - Need a conductive adhesive...
Post by: pehayes on November 21, 2018, 12:50:16 PM
I have this among my soldering tools:

https://www.amazon.com/MG-Chemicals-Silver-Epoxy-Adhesive/dp/B008UH4DB2/ref=sr_1_4?ie=UTF8&qid=1542825890&sr=8-4&keywords=conductive+epoxy (https://www.amazon.com/MG-Chemicals-Silver-Epoxy-Adhesive/dp/B008UH4DB2/ref=sr_1_4?ie=UTF8&qid=1542825890&sr=8-4&keywords=conductive+epoxy)

Says 5 hour cure at 77F. 
Surely you can set a small, thermostatically controlled electric heater inside the car to keep the interior around 70.  Experiment with that for a day or so until you can acquire the adhesive. 

Patrick Hayes
Fremont CA
Title: Re: NGC - Need a conductive adhesive...
Post by: yogidozer on November 21, 2018, 01:55:26 PM
Why not just redneck it on with ductape ?
Title: Re: NGC - Need a conductive adhesive...
Post by: rodekyll on November 21, 2018, 02:37:47 PM
How long to cure?  You could start the car with the heater running.
Title: Re: NGC - Need a conductive adhesive...
Post by: brider on November 21, 2018, 04:59:13 PM
Ok, so it sounds like I need to solve my previous post about a garage heater first. And that idea about duct tape has me thinking....it might work with some of that aircraft 600-mph tape I have and a new connector that Amazon sells...
Title: Re: NGC - Need a conductive adhesive...
Post by: pat80flh on November 22, 2018, 05:28:58 AM
SilverSolder and a small butane torch. Pain in the ass to hold the tab against the glass with long needle nose, torch and solder at the same time, but when you get it, it's good.
  I've never had any luck with the permetex product.
Title: Re: NGC - Need a conductive adhesive...
Post by: redrider90 on November 22, 2018, 11:25:44 AM
On a sunny day you can easily get 70º. Warm it up faster with the heat on and then park it in the sun.
Title: Re: NGC - Need a conductive adhesive...
Post by: Testarossa on November 22, 2018, 11:54:58 AM
Quote
On a sunny day you can easily get 70º. Warm it up faster with the heat on and then park it in the sun.

 :thumb:
Title: Re: NGC - Need a conductive adhesive...
Post by: gearman on November 23, 2018, 06:59:18 PM
I have soldered the rear glass with a gun and good prep. No problem