DIY soldering fume extractor, out of cast concrete

#soldering_tool #Concrete_molding #DIY_electronics Here's my take on soldering fume extractor, made out of cast concrete for weight and robustness. It also features 2-speed selection switch. I used one 60mm DC 12V fan, so that it could be powered by a generic power adapter. Molds should be printed in TPU, but use PETG or similar ones for other parts. Please visit my Thingiverse project page if you would like, where all STL files are shared: https://www.thingiverse.com/thing:534... Timeline: 00:00 Project overview 00:26 Test circuit 03:26 Prototype 04:40 Mold design 08:16 Second Attempt 12:04 The final 13:44 Assembly