I have been cutting frozen sections on a Minotome model cryostat from
Damon/IEC.  It holds a basic Reichert microtome knife.  The microtome is a
multiuser instrument and the knifes get beat up as fast as they can be
sharpened.  An even bigger problem is that the plastic antiroll plate has
become ragged and does almost as much harm as good.  I want to go to a
disposable blade system with a nice shiny new anti roll device.  Any
suggestions?

Neal