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Old 12th Apr 2013, 9:49 am   #26
Radio Wrangler
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Join Date: Mar 2012
Location: Fife, Scotland, UK.
Posts: 13,431
Default Re: Copying a control knob by moulding

That sounds very good, but for brass inserts, this is where you need a little lathe. You don't even need a screwcutting facility for this job so one of the little 'toy' jobs would be fine.

Things like a bakelite knob with the inner collar cracked, you can just turn out the broken collar section, machine up a big brass piece to fill the space, araldite it in, then drill and tap the grub screw hole straight down the original hole.

David
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