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30"x34" rigid-ish substrate
I used 1/4" playwood, you could use 1" insulation foam, stretched canvass...
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1/4" copper tape (~15')
I used 1/2 or 2/3 of a 25' roll sold on amazon.com.
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Cans of spray Paint.
Lighter colors in back, black in front for last layer.
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Polyurathane.
Brush it on, 3-4 thin layers. Sand in-between each layer with 0-000 steel wool.
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Disposable brushes for applying polyurathane.
1 for each layer.
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18-ish? guage braided wire.
I used old thin speaker wire from an old surround sound system. As long as it fits inside the center hole in your receiver it's okay.
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(american) #8 3/4" bolts.
2 for leads, 2 for mounting picture hanging wire.
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(american) #8 nuts.
Bolts need nuts?
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(american) #8 washers.
2 on each bolt, one in front of substrate, one behind.
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