Insulating varnish (formvar): where?

nsmith01tx · Post by **nsmith01tx** » Tue Apr 12, 2011 6:37 pm

Do any common stores carry insulating varnish? I don't see it in the Home Depot online catalog.

There is a Grainger in town, and some electrical supply stores, but none nearby - I was hoping to pick it up without a long drive.

Thanks,
Nathan

JPG · Post by **JPG** » Tue Apr 12, 2011 10:58 pm

I am not having any success finding it either!:( Bill Mayo uses hi-temp engine paint. Formvar is good to 105c which is over 221F.

Fla_Jim · Post by **Fla_Jim** » Tue Apr 12, 2011 11:29 pm

I've used this: http://www.grainger.com/Grainger/SPRAYO ... Pid=search
From WW Grainger

billmayo · Post by **billmayo** » Wed Apr 13, 2011 4:13 am

Fla_Jim wrote:I've used this: http://www.grainger.com/Grainger/SPRAYO ... Pid=search
From WW Grainger

This is the insulating varnish that I am using lately. I had to buy a dozen cans as a minimum order and got a good price. I spray the motor coils on every motor I rebuild. I have been unable to remove any run or start coil windings shorts to ground. I have tried to pressure washer the burnt windings, let dry and spray the insulating varnish on the coil windings without any success. I find that once the coil windings have shorted to ground, I am unable to save the motor. I would always be interested if anyone has been able to remove any short in the run or start windings,

nsmith01tx · Post by **nsmith01tx** » Wed Apr 13, 2011 8:46 am

I guess I may order some from Amazon.com: http://www.amazon.com/s/ref=nb_sb_noss? ... sh&x=0&y=0

I could go to Grainger, but there's not one within 20 miles and I sure don't need a dozen cans

I'll call a couple of electrical supply shops nearby first.

wa2crk · Post by **wa2crk** » Wed Apr 13, 2011 9:05 am

Try Allied Electronics. They have red formvar in 2 oz. containers for about $9.75. Not cheap but it usually goes a long way.
Bill V

JPG · Post by **JPG** » Wed Apr 13, 2011 3:18 pm

nsmith01tx wrote:I guess I may order some from Amazon.com: http://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Daps&field-keywords=insulating+varnish&x=0&y=0

I could go to Grainger, but there's not one within 20 miles and I sure don't need a dozen cans

I'll call a couple of electrical supply shops nearby first.

Thank You for that link!!! With sipping cheaper than Grainger!!! And I do not have to drive across town....... Just wait a few!:)