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Using an 18 inch section of the copper wire strip 3 inches of the end of it and separate the strands into 2 separate wires. |
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Insert the tacks into the holes in the acrylic disk and then wrap the wire around the heads with the wire as shown. With the ends of the wire twist them together and then into one if the wires so you don’t have anything sticking out that could arc. Then push the tacks through the disk. |
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Using a healthy amount of high heat hot glue applied to the center of the cap disk press the disk into the top one sandwiching the glue between them. Hold it or clamp it until its cool. Watch out for the tacks or have band aids on standby. |
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If you haven’t cut your pipes yet now is the time. Here we were experimenting with 3 inch pipes. They did work well and we had a small performance gain compared to the 2 inch pipes. But space won out in this design... test fit the pipes into the holes you drilled in the disks. |
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Here is the grounding plate assembly fully assembled. Use some hot glue to seal any gaps and to hold this together. If you want to light this up with a blue led like we did in the end you will want a cleaner hot glue job than we did here. |
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