Leon wrote:
Is the waste stringy?
How much does the bit stick out past the chisel?
Is the bit a relative close fit inside the chisel? The chips should not be
getting stuck between the insides of the chisel and the bit.

I get very little waste before the jam, so it's hard to say, but best I
can tell it's not stringy at all. And of course the material I clean
out of the chisel is a wadded mess.

I've been using the technique on charlie b's site for setting the
clearances, but I even tried huge swings either way on clearance and it
didn't help.

As for how the bit fits inside the chisel, everything _seems_ okay,
although I will say the machining on the bit itself is beyond horrid.