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Thread: Lapping issues with D8C
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08-15-2007, 01:45 PM #1
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08-15-2007, 02:23 PM #2
The DMT hones will leave scratches like that until they're broken in because there are high spots on the hone's surface. The best way to break it in is to use it. Howard rubs an old chisel on his new DMTs. I either hone a cheap kitchen knife for a while or do some strokes with pressure using a warped wedge razor that I have. It takes a little while to smooth things out, but after that it'll lap beautifully.
You might try using sandpaper to remove the scratches while your hone is breaking in.
Josh
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08-15-2007, 11:31 PM #3
Josh,
After thinking about the problem for a while I remembered it being
mentioned that these hones need to be broken in. I do believe I'll
employ the chisel method!
Thanks for the help,
- Scott
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08-15-2007, 11:42 PM #4
Howard specifically told me that only the 8000 grit DMT needs to be broken in. The others don't. It is possible that they will perform slightly better, but I don't think that it will make too much of a difference.
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08-16-2007, 12:00 AM #5
It doesn't seem to be needed. I lap my stones frequently and they are nice and smooth every time. I am not aware of the need to "break in" a Belgium Blue. I bought mine from Howard and asked him the same question..."do I have to repeat with a finer stone or paper after the 325 DMT continiuos?" and he ashured me it wasn't needed. - and, he was right (as usual).
Steve
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08-16-2007, 12:57 AM #6
Not to argue with Howard or David, but all seven of my DMTs have smoothed with some use.
Howard told me about the chisel method in response to a question about my DMT 1200, which initially was taking small chips out of my razors.
It gets better.
Josh
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08-16-2007, 06:10 AM #7
Well, I'm going to have to bug Howard about this one! I'll see
what his thoughts are and let everyone know how I make out.
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08-16-2007, 09:42 AM #8
Best thing to do is lap it with sandpaper. For Thuringers I use 220 followed by 400 grit sandpaper befor I send them to buyers. Just a piece wrapped around a wooden cube that is slightly bigger than the hone's width.
Much cheaper and just as good as a lapping stone.Plus ça change, plus c'est la même chose. Jean-Baptiste Alphonse Karr.
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08-17-2007, 07:13 AM #9
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Thanked: 2204I agree with Kees on this one. The Belgians and other slate based hones can be lapped flat with sandpaper because they are so soft. Use a coarse grit, 220-320, until the stone is flat then use a 600 followed by a 1000 grit to obtain a very good finish on the hone.
Just my way,Randolph Tuttle, a SRP Mentor for residents of Minnesota & western Wisconsin
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08-17-2007, 04:14 PM #10
Although I really like lapping my Belgians on my DMT 325, I agree that sandpaper would be fine for flattening them. These hones are harder than a Norton, so you only have to lap them occasionally. I lap my blue about every 10 razors or so. The coticule gets lapped even less frequently.
If you hone a lot, some kind of flattening stone is very handy. If not, sandpaper works great.
Josh