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SIC grit size for lapping
- Thread starter kelbro
- Start date
- Joined
- Jun 4, 2010
- Messages
- 6,642
I use 120 or 220 on most stones, 80 on hard vitreous stones that need a ton of work. Generally use a steel plate, tile rubbing stone, or a large hard Arkansas stone for a backer. I imagine float glass would last a very long time.
I use glass from broken windows or pictures. Usually I take the coarse sic-stone to it first, to get some scratches. Then rinse off. Then the stone that's in need of reprofiling.
On a sidenote: don't use diamond plates on benchstones they tend to make the stone too smooth for further use. I spent hours to make them "bite" again on steel.
On a sidenote: don't use diamond plates on benchstones they tend to make the stone too smooth for further use. I spent hours to make them "bite" again on steel.