Two part question about my new stone

**JonnyBoy** · 10-13-2009, 01:02 PM

The stone is a 16k shapton ceramic on glass.

1a. Do I need to lap the stone before I use it?
b. If so can I use my 1000 grit wet dry paper on glass to do so?

Thanks for all your help.

Jon

**mainaman** · 10-13-2009, 01:31 PM

you can use a ruler to see if the stone is flat.
as far as what grit, I can't help since I have never used Shaptons.

**Lynn** · 10-13-2009, 01:44 PM

I have used the Shapton 16K without lapping when new and not had any problems. I use the DMT 325 for lapping though.

Lynn

**Carbonsteel928** · 10-13-2009, 01:49 PM

I check my glass stones by using a reference granite block that is guaranteed dead-flat and some wet/dry sand paper. I take the stone and and draw zig zags from one end to the other, after which, I place it atop of the sad paper and give it a few back and forth strokes. After a few passes, you can lift up the stone and check to see what remains of the pencil marks. Uneven removal of pencil marks show an uneven surface.

Buy Granite Surface Plate at Woodcraft.com

**JonnyBoy** · 10-13-2009, 01:58 PM

Originally Posted by Lynn

I have used the Shapton 16K without lapping when new and not had any problems. I use the DMT 325 for lapping though.

Lynn

Ahhh... the voice of experience. Thanks Lynn.

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