Fastest lapping method for really bad stones..

**Pyrateknight** · 07-15-2012, 08:50 PM

Interesting... I wonder though if industry uses a planer. It would seem the fastest way to pump out flat anything. My father uses one in carpentry all the time.

**adrspach** · 07-15-2012, 08:58 PM

For initial flatenning of bad dishes I use a good quality dry small diamond saw blade on my angle grinder. Then again used 6" wide dry linisher belt grit 40 glued to a piece of scrap granite work top. Then another belt with finer grit followed with normal wet progression of wet/dry sandpaper with water.

**adrspach** · 07-15-2012, 09:02 PM

Originally Posted by Pyrateknight

Interesting... I wonder though if industry uses a planer. It would seem the fastest way to pump out flat anything. My father uses one in carpentry all the time.

They do not. At least manufacturers I have seen use horizontal disc about 2.5 metrs of diameter slowly spinning. Filled with wet sand with few bars spaced like spokes. You put hones ont that disc it gets stuck on one of the bars and sand does the jow. If you follow what one of the collegues here Margeja has made out of a bicycle it is just smaller version of it.

**sidmind** · 07-15-2012, 09:26 PM

I can picture what your saying in my head. It would be hard but doable to make... Google turned up nothing with online videos of the hone making process. Anyone have any? Or photos?

**111Nathaniel** · 07-15-2012, 10:17 PM

Originally Posted by adrspach

They do not. At least manufacturers I have seen use horizontal disc about 2.5 metrs of diameter slowly spinning. Filled with wet sand with few bars spaced like spokes. You put hones ont that disc it gets stuck on one of the bars and sand does the jow. If you follow what one of the collegues here Margeja has made out of a bicycle it is just smaller version of it.

Useful and insightful information, i would like to see one such device. Kinda like slow motion sandblasting.

**adrspach** · 07-15-2012, 10:40 PM

Originally Posted by sidmind

I can picture what your saying in my head. It would be hard but doable to make... Google turned up nothing with online videos of the hone making process. Anyone have any? Or photos?

There is a film available somewhere in archives of Czech television. Hovever there is somwhere link here showing the gadget Henk uses.

**livingontheedge** · 07-16-2012, 12:34 AM

This video shows how they do it at ardennes coticule starting at 3:01
Belgian Naturel Whetstone " Ardennes Coticule " - YouTube

**stingray** · 07-16-2012, 01:38 AM

Originally Posted by Theseus

I use my 4x36 belt sanders with a 50 grit Diablo belt to do the initial lapping on Arkies. Still slow, but fast by Arkie lapping standards.

I agree but I use a smith belt from lowe's. They are ceramic. they cost 18 bucks for 3 belts but are nearly indestructable. Money well spent.
I have never used them on an arke but should work well. I have no complaints about how well they work.

**ezpz** · 07-16-2012, 02:16 AM

im surprised no one has brought up the possibility of loose lapping grit.. havent tried it yet myself, but i think i will pick some up for a few stones..

**sidmind** · 07-16-2012, 04:13 AM

This is interesting, google turned up the glassware hobby. And a web site that sells 8 inch diamond 3m adhesive disks. These will fit on my little disk sander...... Anyone know anything about this technology?
His Glassworks - 3M Electrostatic Diamond Disks

Still trying to figure out if diamond disks will cut faster than standard garnet(or whatever) disks. Or if they just last longer... I think the whole idea is that your sanding material has to be harder than your item...

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