21mm ER32 Collet
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ER32 Collet to hold 21mm stock
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I needed a collet for a job to hold a 15mm compression fitting i was adapting, annoyingly the thread diameter is pretty much 21mm so a standard 20mm collet would not fit. Remixed MMW's design to suit and it worked a treat. Was concerned it may not grip enough as the PLA compressed but worked great and got the job done. Was not damaged at all so will live in the drawer in case i need it again.
Printed in PLA with 4 walls - this ensured it was solid throughout. Suspect a stronger filament would be preferable but PLA worked well enough (was just a prototype i thought) so I haven’t tried anything else.