[Elecraft] Re: Has anyone epoxied their toroids after theywerewound?

Ron D'Eau Claire rondec at easystreet.com
Fri May 18 14:51:44 EDT 2007


Brian wrote:

I understand and I was not asking about attaching the toroids to the  
board. That would make it virtually impossible to replace a toroid  
without destroying the board, definitely a "bad thing".

What I was asking about was using epoxy to secure the windings on the  
core(s) when the toroid is complete but before attaching the toroid  
to the board.

--------------------------------

Understood! That's why I didn't chime in at first. I only intervened when
the thread started drifting to include attaching toroids to the PCB - an
often repeated thread on this reflector! 

In all the years I've been winding the toroids (including many Elecraft
products) I've yet to see a winding move. However, in some Elecraft kits
they  sometimes recommend "adjusting" the turn spacing on the core to
optimize the circuit after the rig is assembled. 

I can't really speak to whether using epoxy would change any electrical
characteristics enough to warrant concern. IIRC Wayne has weighed in saying
not to do it in the past, but I don't have that message handy. 

Ron AC7AC



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