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M8 Screw Knob for e.g. scuba backplate
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A M8 Screw Knob with integrated square nut, e.g. for SCUBA Backplates.
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Model information
- Source
- Printables
- Category
- Outdoor Sports
- License
- Creative Commons — Attribution — Noncommercial — Share Alike
Just a knob/handwheel with an integrated square nut for M8 bolts. Works perfectly to mount Doubles or an STA to a backplate in Scuba diving.
There's about 5mm of empty space before the bolt reaches the nut, so it's not suitable for extremely short bolts.
Why square nuts? Simple, they allow for almost double the torque before rotating inside the print compared to hex nuts.
More or less any filament that is not PLA should work. I've tested PETG and it works great, ASA or PC would be better of course.
Hardware needed
- 1x DIN 557 square nut per knob
Printing Instructions
- Use 0.2mm layer height
- Use 5 or more walls at 0.45mm extrusion width
- Pause the print at layer 62 to insert the nut