[Elecraft] Has anyone epoxied their toroids after they were wound?

[John, KI6WX]

Applying any material (Q-dope, epoxy, hot glue) to the wound toroid is not a 
good idea.  It increases the interwinding capacitance and can effect the 
performance of the various toroidal transformers.  This is especially true 
in the transmitter section where the toroids are tuned with a fixed 
capacitor to increase the power transfer.  The value of these capacitors was 
determined without any coating material on the toroid, and changing the 
dielectric around the toroid windings may require a change in the 
capacitor's value.
-John
 KI6WX



> Never have epoxied toroids, I can see one major
> disadvantage using this method... You'd never be able
> to rewind the same core. Epoxy is a real bear to
> remove.
>
> I've used hot glue to keep toroids in place, a little
> easier to remove if needed.
>
> Think you're better off with nail polish or acrylic..
>