Inspecting my second batch of blanks revealed that my mold is not square. The way I placed it on the board could have warped is a bit as the mold is too thin on the bottom. I’m going to try casting in the 1/2″ acrylic tubes i have. This time I’ll use Stoner mold release, which I didn’t have last time. I’m also going to rebuild my flat HDPE mold. I’m thinking that I can hold the mold together with threaded rod and square tube stock with wing nuts instead of screws. Hopefully this will result in a mold that’s easy to assemble/disassemble as well as square and leak free.
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