Re: Coil Form Sealing? (fwd)
---------- Forwarded message ----------
Date: Thu, 23 Apr 1998 10:28:24 +0100
From: Julian Green <julian-at-kbss.bt.co.uk>
Subject: Re: Coil Form Sealing? (fwd)
For a good supply of wire for your coil and electrical
insulating varnish try your local motor rewind shop/business.
Go with an empty coffee jar and after buying some wire from
them ask them nicely if they would fill the jar with varnish
from the tank they dip the motors.
The varnish is thick and very sticky. It can be applied in
thick coats and does not run. When applying it is impossible
to get a smooth finish, dont worry it smooths out and soaks
into the coil winding nicely as it drys. It takes about 1
week to dry at room temperature, faster if you heat it.
You can heat the coil by passing a current through the winding
from a low voltage high current transformer on a variac. Be
carefull not to overheat the coil form - PVC goes soft at quite