Foo - Yesterday I received

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chris.....
06-15-12, 12:08 PM
a set of 3M polishing paper. 1,2,3,9,15,30 microns.
I'm excited, are you?

http://www.ottofrei.com/store/image.php?type=D&id=22336

ModoVincere
06-15-12, 12:09 PM
8,000 grit?
Holy crap!
MangoPumpkin
06-15-12, 12:10 PM
Can you take skin off w/ that?

jfmckenna
06-15-12, 12:32 PM
3M is the best no doubt. I need to get some 800 and 1200 to finish up a project this weekend but I cannot buy locally. So I'll probably just settle for some of the cheaper wet/dry stuff I might be able to get at the True Value Hardware store.
Iron Parr8
06-15-12, 12:36 PM
It that polishing cloth appropriate for knob polishing?

256190
grueling
06-15-12, 02:05 PM
8,000 grit?
Holy crap!

+1
sevenmag
06-15-12, 02:17 PM
8,000 grit?
Holy crap!


;)

I have plenty of that. But we use it at work for polishing Fiber Optic connections. That's the course grade for that job. :lol:

Not sure what grit the .3 micron is.
chris.....
06-15-12, 03:08 PM
I normally go to 600 grit on my knife handles. I have some black micarta slabs that I want to look like this, so I will take it to 8,000

http://4.bp.blogspot.com/_JZ5Nl6V4L1U/TBocOiBWmpI/AAAAAAAAARk/qLt_xJC1BLI/s1600/wide1.jpg
himespau
06-15-12, 03:17 PM
I normally go to 600 grit on my knife handles. I have some black micarta slabs that I want to look like this, so I will take it to 8,000

http://4.bp.blogspot.com/_JZ5Nl6V4L1U/TBocOiBWmpI/AAAAAAAAARk/qLt_xJC1BLI/s1600/wide1.jpg


Don't you mean you're taking it "Ova 9000"? :rolleyes:


http://www.youtube.com/watch?v=Q3mgUcaGg1E&feature=related
Sixty Fiver
06-15-12, 03:21 PM
I have used even finer lapping film than this... but 8000 is pretty fine.
Sixty Fiver
06-15-12, 03:23 PM
;)

I have plenty of that. But we use it at work for polishing Fiber Optic connections. That's the course grade for that job. :lol:

Not sure what grit the .3 micron is.

.3 has an equivalent of about 15,000
jsharr
06-15-12, 03:27 PM
;)

I have plenty of that. But we use it at work for polishing Fiber Optic connections. That's the course grade for that job. :lol:

Not sure what grit the .3 micron is.

Aproximately 24000 grit if it is a liner relationship I would think.
Couch
06-15-12, 03:38 PM
I normally go to 600 grit on my knife handles. I have some black micarta slabs that I want to look like this, so I will take it to 8,000

http://4.bp.blogspot.com/_JZ5Nl6V4L1U/TBocOiBWmpI/AAAAAAAAARk/qLt_xJC1BLI/s1600/wide1.jpg

Wow! That's amazing. Seriously.

Couch
billyymc
06-15-12, 08:54 PM
Aproximately 24000 grit if it is a liner relationship I would think.

I don't think it's linear. I have some 0.5 micron 3M polishing film from Lee Valley...and they claim 9000 grit on that. I don't bother using it...2000 grit puts a nice micro bevel on my chisels and knives. Any finer edge, and you just lose it too quickly for the effort to be worth it.
gitarzan
06-15-12, 09:51 PM
It that polishing cloth appropriate for knob polishing?

256190

I figured you were already the subject matter expert on that topic.
bigbenaugust
06-15-12, 11:04 PM
Once upon a time, I knew the equation for going from grit to particle size... would have been metallography class in '97.

Seems to me we never used finer than 1200 grit on our samples.