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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