Model 4 Precision Tapping Arm
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An updated version of my tapping arm, more complex but more rigid and designed to use a new magnetic workholding system.
- Rating
- 5 / 5
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Updated at source:
Model information
- Source
- Printables
- Category
- Tools
- License
- Creative Commons — Attribution
Tapping arms keep taps level and supported. I designed this model specifically for using small taps, as small as m1, that will almost certainly break if used by hand.
Video:
mag chuck video:
My smallest test with this tool was a m1 tap, which requires a .85mm hole. For me thats the smallest thing ive ever tapped and I cant imagine myself going smaller any time soon.
Parts list:
tapping arm hardware:
m4 threaded insert x8]
m5 bolt, 16mm, x4
m6 coupling nut x4
m6 threaded rod, 180mm length
m6 threaded rod, 185mm length
m6 nut x2
m6 bolt, 110mm x2
lmu8 8mm linear bearing
8mm rod/ shaft, 10cm (adjust to your liking!)
handle material, I drilled a hole in the shaft and used 4mm rod, no one right way to do this
chuck of choice, I use a er16 colet chuck
2mm rod, 20mm lengths x3
concrete, aggregate removed
braided fishing wire