Tapping Wrench
Description
For holding hole-tapping bits.
Cheaper than any other wrench if you only want to get a couple of specifically-sized taps made from good steel.
Cheaper than any other wrench if you only want to get a couple of specifically-sized taps made from good steel.
Instructions
* Print out the two parts, heavy infill would be a good idea.
---(Ideally you could cast or machine the pinching block out of scrap metal, though the block might not even be necessary)
* Ream out the 8mm hole with a drill bit, or tap it with your bolt itself.
* Insert your bolt or studding.
---(Optional step for studding: drill a hole in it and stick something like a pin in it as a handle - pictured for an idea)
* Use the bolt to drag an M8 nut into the captive nut slot.
* Clamp it onto the square end of a tap, and go cut some threads!
---(Ideally you could cast or machine the pinching block out of scrap metal, though the block might not even be necessary)
* Ream out the 8mm hole with a drill bit, or tap it with your bolt itself.
* Insert your bolt or studding.
---(Optional step for studding: drill a hole in it and stick something like a pin in it as a handle - pictured for an idea)
* Use the bolt to drag an M8 nut into the captive nut slot.
* Clamp it onto the square end of a tap, and go cut some threads!
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MarkU
on
July 11, 2011
said:
Nice and simple! Depending on how standardized your tap collection is I have been able to get by with an even simpler design (e.g. http://www.thingiverse.com/thi... or maybe you could whip off a printable equivalent) which I think might be a bit more resistant to wear in the long term(?) - having said that I haven't printed your design here so maybe it's a non-issue...
License

I'll make a simpler one.
That's the spirit!