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Reply by John Smith

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Posted on Tuba mouthpiece

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John Smith

2012 posts in 668 days


#1 posted 01-13-2019 06:53 PM

mold release is any product that will form a barrier film between the epoxy
and the item it is poured into so it won’t stick. a layer of wax, spray silicone,
cooking spray, vaseline, etc. will work.
if you can melt some candle wax, that will work best. (just keep it as thin as possible).
a thin film of wheel bearing grease will also work ( just a little harder to clean up).
some people have used automotive and furniture paste wax, but, I have had some
bad issues with that. drill a hole in a 2×4 to keep the piece firmly vertical.
tape some paper around the top just to keep everything neat and tidy.

remove any bubbles then insert the wood plug, keeping it centered as much as possible.
put some weight on top to ensure it doesn’t try to float up.
the excess epoxy will flow out onto the paper. let it cure for at least 6-8 hours.
then twist it apart, clean off the mold release and you have your pattern to copy.

if you are going to be doing several of these, I would annotate the mouthpiece number
on the wood for future reference. (there are different sizes for different tones).

.

-- I am a painter. That's what I do. I paint things --


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