Wheelhouse is a newsletter for makers that covers new materials, techniques, and tools.
Foaming 3D Printer Filament
Grow or Shrink a Silicone Mold
It turns out that you can use silicone molds to scale cast parts up or down. Already made molds will absorb mineral spirits and grow. Alternatively, by diluting the silicone with mineral spirits at creation time, the mold will shrink as the mineral spirits evaporate. TheCrafsMan gives a nice tutorial on how it’s done.
Caliper Tips and Tricks
Kyle Cothern gives us a bunch of tips and tricks on calipers — how to choose a set, how to use them, and what that little tail that sticks out from the opposite end is for. He doesn’t tell the secret of using conical tips for inter-hole distance, but he should.
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