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Re: Electrical board materials?
06 - polycarb.
07 - aluminum. Never again will we have a conductive backplane.
08 - Gatorboard (foam laminated between post-card stock) previous years, polycarb this year. Breakable if mounted vertically. Nylon screws and nuts ($5.50 from mcmaster for 100).
09 - Polycarb. Nylon screws and nuts.
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