Repair And Restoration
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Tracing and Transferring Cavity Covers
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Tracing and Transferring Cavity Covers
Wondering what methods people use for tracing the shape of a cavity to make new covers, backplates, or switch-plates? Attaching a photo example of a battery cavity that’s missing a cover and wondering what the best way would be to trace and reference the size so I can transfer it to a cardboard cutout and eventually cut a piece of wood to cover the cavity?
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4 Replies
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In the old days I would have done an etching. Tape off the paper really tight and then use mechanical pencil to rub around the edge.
Now I would lay that on my office printer with a 6 inch rule, scan it and then scale it in Fusion 360 and trace it.
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Awesome. Thx for including both the old & new (low tech & high tech) approaches.
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I’ve used the first suggestions a few times but I used a soft #2B pencil. The second suggestion sounds interesting. Thanks for the idea
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+1 for the old way, especially for an instrument/cover you’ll never see again. I can trace it, cut out the tracing, glue the tracing to whatever material I’m using for the final cover, cut it close on the bandsaw, sand to the lines and have it installed before Ian’s computer has rebooted!
But, seriously, in my shop the only cnc-ish device is an Ortur 10-watt laser, which IMO is great for this sort of conundrum. I’d still use “the old way” for a one-off on an instrument I doubt I’d see again, but I do something akin to Ian’s suggestion every time I replace/reproduce a pickguard/cavity cover/poker chip for instruments I’m likely to see again.
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