Problem notching pipe with floor drill press

Sounds like your pipe is not adequately secured. Are you trying to do it by holding the pipe with your hands?

No, pipe is on a machine vice and I have three clamps holding that vice and one additional clamp holding down the top portion of the pipe to the vice. Looks like I have a little end play on the 2" hole saw and chuck combination. That's maybe the problem. I've adjusted the DP pulley tension and the slip went away, for now anyway.

Probably starts out OK and binds as you getcloser to the middle of the pipe?

Standard hole saye have a tooth pitch that is a little course for the wall thickness of sched 40 pipe. There is a company--Sioux, I think, that makes hole saws with finer teeth. Not quite fine enough, IMO, but they work better.

Fred wrote:

Actually it binds at the beginning from the top to about 1/3 of the down then its ok to 2/3 of the way down then I have to flip the pipe over and cut on the opposite side since the hole saw is not long enough and binding starts all over again. I do think your right about not having enough teeth on the saw. Thanks, I'll check Sioux out.

Sounds like your setup isn't rigid enough and the hole saw is binding. Try one of these, if setup right, you can cut through in one pass once the top piece of waste is cleared from hole saw.

Is the saw locked rigidly to ther arbor? Most pin-drive saw arbors do not lock up solid. Starrett makes one that works well and isn't expensive. Catalogue number A17-38

Ken.