Ditto: I have used teflon cutting boards trimmed accordingly as a laminate
over plywood.
-----Original Message-----
From: Amps [mailto:amps-bounces@contesting.com] On Behalf Of Tom Hellem
Sent: Tuesday, October 22, 2019 9:00 PM
To: Jim Thomson
Cc: amps@contesting.com
Subject: Re: [Amps] Non metallic paint for plywood ?
Jim-
How about using a piece of 1/4" or so thick piece of plastic on top of the
plywood under the choke? Then you wouldn't have to worry about the paint.
Tom H
K0SN
> On Oct 22, 2019, at 1:41 PM, Jim Thomson <jim.thom@telus.net> wrote:
>
> I'm going to stack 2 x identical sheets of 3/4" plywood together in
the new 24" rack.
>
> The 127 lb Dahl 4H choke will sit dead center on the plywood. Is
run of the mill
>
> paint in a spray bomb conductive ? Or should I be using indoor latex,
outdoor latex... or something else, like BBQ repair high temp paint ?
Or perhaps fire resistant paint ?
>
>
>
>
> 2x2 angle aluminum down each side of rack, with plywood on top of
em. Entire mess will be up off the bottom just enough so I can
get my hands underneath to tighten up the 1/4-20 nuts. 1/4-20 is
max size that will fit the 4 x slotted holes in the 2 x angle
steel's, at base of choke.
>
>
>
>
> I don't trust the insulation breakdown..... which is just a single
sheet of....'fishtape' at bottom of each side of choke. Fishtape
partially torn on one side. Each sheet is 21 x 22.75
>
>
>
>
> Only the top sheet and front and rear edges to be painted. Its
just for aesthetics. The choke is part of a C-L-C experiment I
am playing with these days..for a B+ supply. Choke has a 25 kv-65 A
spst-nc kilovac ceramic relay across it.... plus an adjustable spark gap.
Spark gap is just a pair of 1/4-20 silver plated brass screws..with
1/4-20 acorn nuts facing each other.
>
>
>
>
> Jim VE7RF
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