Mould for epoxy

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alex robinson

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I have a part turned bowl blank that I would like to fill some voids in with epoxy. Does anyone have any tips for what to make barriers out of? Acetate and bathroom sealant? I think it will take a fair few pours from different angles!
 

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Adam Pinson

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I have a part turned bowl blank that I would like to fill some voids in with epoxy. Does anyone have any tips for what to make barriers out of? Acetate and bathroom sealant? I think it will take a fair few pours from different angles!
For this kind of project, i tend to use sheets of A4 acetate that i can cut into whatever shape i need, i use a hot glue gun to seal it, make sure you use plenty, even a small leak is a disaster.
 

Inspector

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One gent I know sometimes turns a rough softwood bowl made of a 2x glue up and sized so the outside of the "open" bowl drops in. Then he does the same to make a plug that fits in it to take up the inside volume. When ready he puts the resin in and then puts it in a large pressure pot and pressurizes it as high as the pot is rated for. You need extra resin to allow for what finds new crevices so the plug and outer bowl are taller than the cast one. When cured he mounts the works and turns off the molds revealing the creation inside. Because it is a time consuming process he now usually casts the resin into the wood block first and then cores the middle out for more bowls and bandsaws the corners off to use for smaller turnings. An alternative is to find cheap plastic bowls to use instead.

Pete
 
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