Cheap Reversible Threading Attachment?

[magicniner]

I use my red vertex if I have a lot of large holes to tap, it adds about eight inches plus tooling under the quill and the reverse isn't very sensitive, I use it on a floor standing mill drill that's bigger than me so clearance, sensitivity and power aren't issues.
There are a lot of good solutions using arms resembling angle-poise lamps that allow the use of electric or pneumatic tools and the only dedicated bench space is the arm mounting point,

- Nick

[Boyan Silyavski]

Ok. Thanks.

Obviously number 1 solution would be on a big mill like that bellow, though i have to go to my friend Jeff to do that on his bridgeport



Next seems the BFE is too short for that attachments:



That all leaves me to use this:



or make from this/the one on right on first photo/ something like the tapping fixture on second photo and power it by my cordless driver and use its clutch against tapp breakage. that seems to be the fastest way to tap correctly, as i can speed the driver on exit just using the trigger and can change direction for a second

[komatias]

Boyan,

the tapping fixture you show, last one, is really handy for making good threaded holes. I have one and prefer it for small parts than the autoreverse tool