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Results 16 to 17 of 17
Thread: Coarse stone recommendations
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27th December 2014, 03:33 PM #16
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I've found that old black PVC waterpipe does an excellent job of cleaning out swarf from sanding belts. The only proviso I'd add is that it's best to use it sparingly & frequently, before clogging becomes severe.
Grits will vary between belts too. Silicon carbide & aluminium oxide have different cutting characteristics, but which is which I can't rightly remember.
DMT make a superb very coarse gritted lapping plate that performs well too. It's expensive, but at 12" x 3" it is the largest, and at <.0001" unifomity the flattest available.Sycophant to nobody!
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4th February 2015, 05:02 AM #17
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Norton coarse crystolon stone ( a new one, they get harder and less friable as they get old )
That'll be good for bevel work. It won't stay flat for back work, though.
For work flattening the back of something, I'd use a milled plate or an old plane sole charged with 100 grit diamond powder (should be about 25 cents a carat, and cost about a dollar per pitted iron to use...at most).