Advice drill/tap Draco Trunion (?)

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[ARCHIVED THREAD] - Advice drill/tap Draco Trunion (?)

Posted: 2/23/2015 2:11:58 AM EDT

Can anyone who has successfully threaded the rear trunion on a Draco please give any advice. Ive read countless postings about taps breaking in the process and I dont want to find myself there. Of course ill be using cutting oil, but any other advise on what brand tap or tricks people used (without breaking) is appreciated. I picked up an Irwin tap, but im unsure as to the quality. Thank you.

Posted: 2/25/2015 4:23:58 AM EDT

[#1]

Well after a little reading it sounds like the Irwin tap may be junk. I bought a Widia HSS tap instead that should give me better results. Will be threading this week and will update for anyone interested.

Posted: 2/26/2015 12:35:31 AM EDT

[#2]

If you haven't spent much time with a hand tap, I'd get a piece of bar stock and practice maybe.

If you feel extra resistance and it feels like is seizing up, back off half a turn and try again. Don't force anything.

Posted: 2/26/2015 6:47:18 PM EDT

[#3]

UPDATE:

So worked like a charm! The Widia tap seemed to have a very sharp cut to it. The only thing now is my holes might not be perfectly aligned, which is gonna bother me

ugggh.

Anyone now where to buy a rear Draco trunion if it ends up bothering me too much? It's really not off, but I'm a perfectionist sometimes.

Posted: 2/28/2015 9:35:27 PM EDT

[#4]

Go ahead & build it by the time you are done you probably won't notice it.

[ARCHIVED THREAD] - Advice drill/tap Draco Trunion (?)

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