I need to tap through some 2" thick A36 plate.
The tapped holes are:
1x8, 24 times
3/4x10, 24 times
1/2x13, 12times
Now I know you are asking why I am bothering to ask this huh?
Well, this presents some tricky situations.
Most spiral point CNC taps are not necessarily long enough to tap through 2" of material.
I am afraid of using "pulley taps" as they are weaker then $hit, and I've never had good luck with them.
I am trying to NOT have to finish these by hand. (oof!)
These holes go in some 19" diameter steel plates, so processing by hand won't be too much fun. Neither would any unnecessary handling.
This will be done on a 12 hp Hurco VMX24 with high torque.
All the taps will be run in tap collets, in ER45 holders.
I called Vega-tap to get their recommendation. I quote "... well THAT is tricky. I am not sure what taps you would use. I'll get back to ya. "
Well heck, I need to order these today.
What say you group?
Should I be looking at another brand?
What about peck tapping depths?
What will the extra depth do to my SFM's?
Should I be thinking forming?
Can I really expect a 1/2x13 tap to make it through 2" of material 16 times.
Thanks,
Doug.
The tapped holes are:
1x8, 24 times
3/4x10, 24 times
1/2x13, 12times
Now I know you are asking why I am bothering to ask this huh?
Well, this presents some tricky situations.
Most spiral point CNC taps are not necessarily long enough to tap through 2" of material.
I am afraid of using "pulley taps" as they are weaker then $hit, and I've never had good luck with them.
I am trying to NOT have to finish these by hand. (oof!)
These holes go in some 19" diameter steel plates, so processing by hand won't be too much fun. Neither would any unnecessary handling.
This will be done on a 12 hp Hurco VMX24 with high torque.
All the taps will be run in tap collets, in ER45 holders.
I called Vega-tap to get their recommendation. I quote "... well THAT is tricky. I am not sure what taps you would use. I'll get back to ya. "
Well heck, I need to order these today.
What say you group?
Should I be looking at another brand?
What about peck tapping depths?
What will the extra depth do to my SFM's?
Should I be thinking forming?
Can I really expect a 1/2x13 tap to make it through 2" of material 16 times.
Thanks,
Doug.