I am a huge Breaking Bad fan and had an idea for some coasters that turned into an interesting project involving Adobe Illustrator, CNC machining, silicone caulking and concrete.  I designed the coasters in Illustrator and then cut them out of MDF on the CNC.  After sanding these “masters” down I found instructions online on how to make silicone molds using caulking and corn starch.  The molds were made, the concrete was poured and after some curing and a little bit of paint – success!
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