CNC Collet Nut Fan (ER32-UM type nut)
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After creating the ER20-M fan and seeing how well it works, decided to make one for my buddy's machine using ER32-UM nut
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- Creative Commons — Attribution — Noncommercial
After getting my own CNC machine equipped with the ER20-M collet nut fans and seeing how well they work, I decided to make one for my buddy's CNC machine - he's using ER32-UM nuts and only goes to 18K RPM, however as of the time of writing, it's not yet tested.
Make sure to print with 4 walls so there is no infill, as that could cause disbalance at higher RPM's.
These are made for suction, but a simple mirror will turn these into blowers for use in metal processing or without a dust collection mechanism.
For the ER20-M ones, I tested them extensively and they've been really really good. Anyone testing these out, please let me know - I'm curious how you guys like these.
PS: the ones on the print plate are 12mm fin lengths, and in my hand is the 20mm fin length.