View Full Version : sizer die

02-18-2009, 11:23 AM
i have an old star sizer die .358. i came with a star sizer and i already had a .358 die. i was thinking about opening it up to .359. what is the best way to do this?

02-18-2009, 12:20 PM
I opened a tight Lyman die by honing the inside with #400 then #600 grit emory paper.
I have slotted mandrels for jewelry work, but you can do the same thing by slotting a nail and installing in a drill, Dremel or Flex Shaft machine.

Cut the Paper into strips, wrap on the mandrel to fit the diameter of the hole somewhat tightly and remove a little metal. Wet the paper with oil. Finish with finer paper and either crocus compound, Flitz, SimiChrome, or other metal polish.

Either measure with a good inside caliper or push a boolit through and measure it.
I did it the latter way. Go slow and measure. You can't put metal back on.

Hope this helps.


02-18-2009, 02:35 PM
Sell it here on the forum and have Lathesmith make you a .359" one like he did for me! Buckshot also does fine work making sizing dies.

02-19-2009, 10:07 AM
i put the die in last night and sized some. it is giving me .3585--.359 . i will test these against my .358 .