wrote in message
oups.com...
I have a newly purchased Delta 14-651 hollow-chisel mortiser, and I am
using the included bit set.

No matter where I set the bit clearance, no matter how fast/slow I feed
the bit, and no matter how deep I go per pass, my bit clogs with
material almost instantly.

I'm using well-dried cherry, and the 5/16" bit seems to do okay. But
as soon as I step up to the 3/8" bit, it clogs. Same with the 1/2".

I know the included bit sets aren't the highest quality, but I'd like
to investigate technique mistakes before I go blaming my tools. (And
sending more $$ to LV for their Japanese set!)

Any help would be mondo appreciated!!

BTW, thanks to charlieb web page about clearance setting!


Strange problem that I have never heard of.
The bit should be turning FAST. Is it?
YOU ARE CHANGING the bit when you change chisels aren't you.
The bit is still spinning fast when actually drilling?
And lastly, have you tried these chisel and bits on another type wood?