04-27-2018, 02:41 AM
Since the material is fairly thin, I would try this approach:
a) Use double sided tape and stick the plate onto a piece of plywood about the same size.
b) Mount the plate/plywood onto your lathe's faceplate with wood screws from behind using flat head screws big enough to catch both sides of the slot, yet short enough not to touch the aluminum.
c) Trepan the OD. A parting tool may work on this diameter but you may need to make up a correct trepanning bit. Take it real easy, using the compound to advance the bit.
d) Drill/bore out the ID.
e) Use a heat gun to warm up the plate which will help with removal.
Good luck.
a) Use double sided tape and stick the plate onto a piece of plywood about the same size.
b) Mount the plate/plywood onto your lathe's faceplate with wood screws from behind using flat head screws big enough to catch both sides of the slot, yet short enough not to touch the aluminum.
c) Trepan the OD. A parting tool may work on this diameter but you may need to make up a correct trepanning bit. Take it real easy, using the compound to advance the bit.
d) Drill/bore out the ID.
e) Use a heat gun to warm up the plate which will help with removal.
Good luck.