Thread: Shapton 15K question

I recently purchased a Shapton pro 15K stone. I used 1200 grit wet sandpaper to "lap" it like I have for other stones. When looking at it at an angle toward a light it looks to be mirror-like as I would expect.
When I run a blade over it, it does not have to smooth feel of the Norton but rather feels a little "bumpy" where I expected it to feel as smooth as glass.
Is there something I am not understanding?
I have also noticed this with other 12K stones as well.
Anyone have any observations or advice before I make another try?

Lap it some more. It will smooth out.

Jeff

Can't say I have.

I would also make sure it's VERY clean after lapping. Even the slightest grain from the 1200 grit will cause "bumps".

I had this problem with the Shapton 15K. I switched to the white (gotta be the white) lapping powder from Shaton now and have no problems. I have a lapping plate though, so I'm not sure this would help.

I picked up a used 15k pro awhile back, it had a "pebbly" finish, sort of like a football or basketball. Not that extreme, but it was still there, and I could feel it both with my razor and my fingers. I use a DMT Duosharp EF (about 1200 grit) 11 inch stone to lap all of mine, and it smoothed the 15k right out.

Jeff

Where did you find this beast?

Originally Posted by bach9135

Where did you find this beast?

The DMT? Just Google DMT Duosharp and you'll find several sites that carry them. They're not that spendy either. It's a great size to lap all my 8" stones, it even sees the occasional razor when I need to do some major work.

Jeff

I also have a shapton (12000) that I purchased from the japan woodworker. I lapped this stone like I do all of my stones. I used a green DMT. The green is extra fine. This has always worked very well for me but on the shapton came out feeling course in some areas.

My next step was to try lapping the shapton with one of my 8000 grit nortons. This did the trick. I was able to hone my razors on the shaptons without feeling any bumps or grit. This is what works for me.

I also have a nice glass lapping plate but I do not use this for truing my hones. I dont like the idea of emory cloth, no matter how fine, touching my hones. I use the lapping plate for restoring woodworking cutting tools. Such as planes, plane irons and chisels, etc. If I can find out where to get the shapton white lapping powder I just might give it a try.

Good luck!

Originally Posted by glrerun

If I can find out where to get the shapton white lapping powder I just might give it a try.
Good luck!

Right here.

http://www.shaptonstones.com/stones/...ccessories.php