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Drywall sanding mesh.

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If you get the correct type you will have a 5 meter length that you can wrap over a paving slab. I did most of my naturals this way when I was playing with Charnley...

It's not ideal to be using strange methods to produce shaving edges. Jnats work in a very similar way. You have a hard base stone, and then a selection of rubbing stones that produce different grades...

Oil is used rather than water because oil fills any voids in the rocks surface and makes a rough stone appear smoother to the edge. In effect it floats the edge better.

Loading the stone is...

Yup looks like a good sized arky.

You should get some nice edges off it, It doesn't look like it needs a lot of flattening if any either. If it did want flattening you would be in for a world of...