[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Coating Secondary with Epoxy
Original poster: "Dr.Resonance by way of Terry Fritz <teslalist-at-qwest-dot-net>" <resonance-at-jvlnet-dot-com>
It will take a long time, usually 5-6 weeks to get all the residuals off the
coil. You can speed this up by putting it near a hot boiler or in an oven
for 8-12 hours. If you don't do this it will attract dust from the air and
begin to look really messy in a week.
It's always better to use a high voltage air dry varnish than the epoxy
compounds which are really not made for high voltage, and, in fact, may
contain some voids which offer no insulation protection whatsoever near the
wire itself. Dolph's AC-43 is the best choice for small magnet wire coils.
Forget these messy epoxies that never seem to cure properly. Don't feel
bad, I made this same mistake on a coil myself years ago. It took mine 9
weeks to cure and I finally had to sit it next to a large boiler for 4 days
to drive off the residuals.
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
Sent: Sunday, January 05, 2003 1:48 PM
Subject: Coating Secondary with Epoxy
> Original poster: "Dave Leddon by way of Terry Fritz <teslalist-at-qwest-dot-net>"
> Hi Folks,
> Last Thursday I coated a 10-inch secondary with Ultra Glo, an epoxy sold
> Tap Plastics, and Friday I applied a complete second coat to cover several
> areas that came out a little thin. Now, 48 hours later, I've still have
> several small areas which are tacky to the touch. The product literature
> claims a complete cure after 24 hours at room temperature so I suspect
> this stuff has cured as much as it's going to cure. Any ideas on causes
> and treatment?