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Thread: Favourite Final Lapping Grit
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04-27-2007, 06:55 PM #1
Favourite Final Lapping Grit
I'm thinking of the Norton combo mostly and I'm wondering which grit each of you prefer to use to lap your stone and why. I'd also like to hear what type of material you're using, lapping stone (what grit is that), Wet/dry paper, another stone etc.
X
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04-27-2007, 07:13 PM #2
I lap my Norton 4/8K with my Norton 220/1K.
Just another data point,
Ed
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04-27-2007, 07:26 PM #3
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Thanked: 9I do wet/dry on marble.
Grit is whatever happens to be available - 1000 is the highest I have used, but usually lower.
This *may* be a bit off-topic but I thought it doesn't matter if you use 200 or 1000 that much because once the stone is flat what matters most=cutting particles in the slurry, which aren't affected by the paper grit. True or false?
Cheers
Ivo
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04-27-2007, 07:38 PM #4
Ivo - that's probably true for Coticules, Eschers and the other natural hones that use a slurry....but for Nortons, it's my understanding that you don't build a slurry on them, and the stone does the cutting, in which case, the finish of the stone becomes more important.
I lap my Norton 4K/8K with a Norton lapping stone.
-whatever
-Lou
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04-27-2007, 07:41 PM #5
I lap everything on a 2" granite surface plate with 600 wet/dry paper.
The Norton lapping stone leaves too coarse a surface on the 8K hone for my taste.
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04-27-2007, 07:47 PM #6
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Thanked: 1587800 wet/dry paper on glass - I've tried 1000 too, but I prefer the feel left on the Norton from the 800.
James.<This signature intentionally left blank>
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04-27-2007, 08:13 PM #7
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Thanked: 9Hey Lou,
I do build a slurry on the Norton.
Am I the only one who does this? - Don't know
For the record, some of my best results on the Norton came when I used shaving cream to build slurry (gradually thinned with water). I have tried it with Proraso and KMF creams, and maybe LT Shave Lotion. Most times I just make sure there's lots of water - just because using the cream is way messy: hone a bit, wipe, test, hone again, wipe again, test, hone again, wipe... whatever
Cheers
Ivo
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04-28-2007, 05:50 AM #8
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04-28-2007, 02:30 PM #9
I do not use a slurry with the Norton. I never tried it because I figure anything I put on the stone (except water) will leave a "residue" that clogs the pores of the stone... and that will reduce the aggressive cutting action typical of Nortons. I'd think the waxes and fats in soaps would soak into the stone much like an oil and really clog things up.
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04-28-2007, 02:48 PM #10
Boy, that's interesting, Ivo....that's the first I've heard of using anything other than water on a Norton...I know that Norton makes a Prep stone, but I haven't found any recommendations on how to use it. It's white, and looks similar to the material on the 4K side of the 4K/8K.
shaving cream.....hmmmmm....any problems with clogging or residue?
-whatever
-Lou