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I was lapping my new Naniwa 12k and my Norton 4 and 8K stones, in my 4 and 8 Nortons, I have these fine scratches. What did I do?! Did I ruin them? How did this happen? I used the DMT 325 on the Naniwa and first a Norton lapping stone and then the 325 on the Norton, what did I do wrong, please help!
Just checked and the same "grooves" are in my new Naniwa as well, really freaking out!
First, nothing has been ruined. You have a lot of stone with each. It is a bit hard to see exactly what the problem is with your picture of what you think is damage. Was your DMT brand new?
Hello, thank you. The DMT was brand new. The dark "lines" are actually grooves in the stone. The grooves are in all of the stones that I lapped today, all the first time.Quote:
Originally Posted by lz6
Yea, know the feeling happened to me too using a brand new DMT 325 on my new Naniwa hones. I had to use the shank of a big screw driver on the DMT with water running on it and some dish soap for lube. Racked the shank of the screw driver back and forth on the DMT to knock off any high diamonds. Took a bit but it worked and the DMT now leaves the hones smooth. The screw driver trick is on here if you search for it, that is where I found out about it. My guess is that you have some high spots that need taking care of.
Bob
Forget the screwdriver,most are cad or chrome plated and IMO you will contaminate the DMT.
Sharpen some kitchin knives,some chisles,work the entire plate over with carbon steel items
Than first and formost.lap under RUNNing water.you have to wash out the slurry constantly.
The hones can't be used like this, correct? I have to fix the DMT and then start over?
The hones are fine,not to worry,as above,sharpen some non razors on the DMT,Knives,scissors,an old ax.Quote:
Originally Posted by TSWisla
Clean the DMT with a scotchbright pad and some dish soap.Mark a pencil grid on the stones.
using a figure 8 pattern under running water,lap the hone until the grid is gone,all will be perfect.
I ran a chisel over the DMT for a bit and then relapped the stones, they look fine now. My new problem is that I can't seem to get my Dovo sharp enough! I must be doing something wrong. It will catch few hairs here and there, but mostly just runs them over. I did circles with and without pressure on a Norton 4K, then 10 X stokes on the 8K and finished up on a Naniwa 12K. I went back and tried again a couple of more times (once going back and forth between the 4 and 8K) and it still feels the same. It shaved OK, but I have pretty coarse hair, it pulled under my nose and was not very close even with 2 passes. I want to try again, but I am worried about ruining the spine. Oh well, I guess you have to learn some how. Some history about the Dovo, it is carbon steel, purchased new and shave ready from The Superior Shave. It shaved perfectly the first time and quickly lost its keenness.
This is possibly your stropping .Quote:
Originally Posted by TSWisla
Aim for the razor to cut hair before you get to 12k. Also 10 stokes on 8k may be a bit minimalist.
Hopefully your razor is not warped etc making it a challenge to a new honer.
OK, I will give it another go. I was using the 10 strokes as that is what Lynn Abrams mentioned. Thank you again.Quote:
Originally Posted by onimaru55
S'ok.Quote:
Originally Posted by TSWisla
10 strokes at a time is a good safe approach & may be all that's needed if all prior steps were perfect. ie minimalist but effective.
If you can identically reproduce 10 of Lynn's strokes you're well on your way to success. :)
You also might want to read the WIKI section on beveling the long edges of all your stones. Check it out.
i have a naniwa 12k and a dmt 325 coming tomorrow from srd and wonder if i can use a steel burnisher to knock off the high spots. it's not plated like a screwdriver shank. it's used for, and i'm sure some of you know this, raising a burr on a metal scraper for wood finishing. i don't feel like getting all involved with knives, plane irons and/or chisels. just tune the dmt, lap the 12k, hone a razor and shave.
Actually thats there is to it:)