My auto edger is giving me trouble cutting poly
(leaves little dust like marks on the surface of lens after edging)
and sometimes would stop altogether.

While I fix the problem, I was trying to use a manual edger to cut PC and found out it was extremely difficult.
Most manual edgers have a finer wheel for cutting CR39s I guess.

Is there a manual edger with a poly wheel?
How did opticians cut poly before the days of patternless and auto edgers?