I joined the Mold Making class with the Central Oregon Makers last week.  Before going, I had no idea how to make a mold or what I might use it for.  Although 3D printing (“additive manufacturing”) gets most of the attention, mold making and casting seem like useful and versatile tools for duplicating and fabricating items.  I could see using this technique to repair or replace small latches, wheels, key caps, housings, and decorative features where an original is available.  For example, I’ve had trouble finding robot wheels I like, but now I can make my own.

It’s nice to have another tool in my toolbox, and I expect to invent problems just to use this tool.