Thread: Lapping a Norton

I have a 4000/8000 on order, so if you have to prepare the surface with wet/dry how do you ensure you keep it flat ?

I've searched through SRP but can't find the answer.

Gary

You wet the sandpaper and soak the hone, and put the paper on a thick sheet of glass or some such flat surface, then rub the hone around on top of it. The paper sticks to the glass due to hydraulic lock. The primary purpose of this procedure is to make sure the hone is perfectly flat, though it will also deglaze the hone while it's at it.

Does using a Norton Flatening Stone accomplish the same thing as lapping with wet sandpaper?

Yes, but it's a more expensive option.

Originally Posted by mparker762

You wet the sandpaper and soak the hone, and put the paper on a thick sheet of glass or some such flat surface, then rub the hone around on top of it. The paper sticks to the glass due to hydraulic lock. The primary purpose of this procedure is to make sure the hone is perfectly flat, though it will also deglaze the hone while it's at it.

If you're using a sheet of glass there's a shure fire way to determine when the stone is flat. Put the stone a clean, wet glass surface and lok at the interface between them, not only will it stick, but you'll see a pattern of waterbetween the stone and glass. You'll have a spotted pattern until the stone is flat, then it will be all even.