Amp tinkerers and people who aren't afraid of 700 volts or so in here....

Moderators: Slowy, Capt. Black

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BY Snarblinge
Or even better PTFE sheet,

really don't want to be spending up too large. but need 200x400mm reluctant to ship from US.

thanks all.
You can get sheets of tufnol phenolic board from rs components in various thicknesses. Freight is free for web orders and there is no minimum order quantity.

(I don't work there, I just love the free overnightish shipping for exotic components)