Tapping a hole twice in a HMC

[Appetite]

Is it possible to tap a hole twice in a HMC using the M29 rigid tapping mode, or will the tap crossthread when it enters the second time?

When I am doing one off type work or very small series of parts with threaded blind holes, I usually thread just a few mm`s into the hole with the machine, and re-tap it by hand later to keep chips from packing infront of the tap and break it.

If I could peck-tap the hole in the machine, then that would be alot easier.

[Pole]

Sorry, my english is baaaad and i`m realy tired so i`m typing this in Norwgian... :P

Om maskinen din er forberett fra fabrikken til å bruke rigid tapping så skal det gå greit... det som er viktig er at spindelen orienterer seg før hver syklus kall slik at den treffer samme grad hver gang, dette krever selfølgelig at tappen er i en fast holder og som sagt at maskinene og styringa er satt opp for dette...

[Appetite]

Thanx man! I`ll give it a try in a block of scrap aluminum.

The machine is a 2004 Mori Seiki NH-4000 DCG, and came with rigid tapping from the factory.