I works to do it backwards on my 10EE. Put cutting tool on back side, lathe
in reverse. Stop machine with 1/2 nut engaged right at shoulder, you can
fiddle till its just right. Turn compound in to make cut. Turn lathe on in
reverse, it threads from the shoulder out. You need a small narrow groove
right at the shoulder to have a spot to advance the compound when the
machine is off.