The Mec short kit is a metal plate with four removable screw in feet. Its set hight is for the 1 3/4" shell. I turned down the legs on the lathe to what I thought I needed for the 2 inches; I had to do that one or times until I had the room I needed at the crimping station. If you're just going to roll crimp the hight is not so critical. I thought about just using a shaped steel plate at first but I'm glad I didn't. Having to cut down the thickness on the mill or shaper would have been too much screwing around. Wood would work easily as well on the Mec Jr. but you might find yourself taking it back to jointer to get the crimping station hight.