Nut Trap for 21mm ID tube / 6-32 Nuts for MPCNC 525 F-25mm OD
thingiverse
The included nut trap from the MPCNC 525 F-25mm was too large for my tubing, and the customizable paramettric nut trap wasn't working - the nut diameter wouldn't resize. I had to create one myself in the end. My tube specifications are 25mm outer diameter with 1.6mm walls that I bought from Screwfix UK at https://www.screwfix.com/p/deta-class-4-conduit-tube-galvanised-25mm-x-3m/7442j. Using a tube cutter left a small lip on the inside of the tube, so I needed a 21mm diameter nut trap that just fits. I'm using 6-32 nuts measuring 7.85mm in diameter from flat face, and I've used 0.3mm clearance for a press fit. Your results may vary depending on printer accuracy and slicer settings. Note: Rotate the object so the flat face of the nut trap is flat against the print bed - I don't know how to rotate my STL on Fusion360.
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