What Type Of Stone To Deburr Between Scraping Cycles.

My preference is a soft Arkansas.

Diamond stones I would NOT recommend, just too aggressive. Same goes with aluminum oxide stones (HF, India) but with a light touch those can be used. Make sure your stones are flat, as well!
 
Just a strategy from a cheap OF------get a bunch of sway- backed sharpening
stones and a couple of new concrete rubbing stones. Go at it,flattening the one
with another. Finish as earlier mentioned with a flat surface and sandpaper.
BLJHB
I used to work in the quartz crystal (radio crystals) industry, and we had huge lapping plates which contra-rotated with the crystals in between. These plates were about 4 feet in diameter, 3 inches thick, and had to be absolutely thick. The plates had to be lapped flat. The fellow who took care of the laps told me that three plates had to be lapped to insure flatness. IE: just lapping two plates together could leave one plate concave and the other convex. By lapping each plate against the other two, one at a time was the only way to insure that all three were flat.
I mention this because flattening one part on another does not guarantee flatness. Maybe its close enough though.
 
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i use a broken wheel from a norton thread grinding wheel 180 grit
 
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