Abrasive paper designation
Abrasive paper designation
(OP)
From my bygone days of metallography and less technical pursuits, I am used to SiC (Silicon Carbide) wet-or-dry paper 180, 220, 320, 400, 600 grit.
At my current job as a machinist we do a lot of sanding and polishing. Cosmetics of the metal parts (about 25 different metals and alloys -- it's like disneyland for metallurgists) is very important.
We have 220 grit and P220.
Ditto on some other grits. The P designation seems to be a finer grit.
What does the P stand for?
At my current job as a machinist we do a lot of sanding and polishing. Cosmetics of the metal parts (about 25 different metals and alloys -- it's like disneyland for metallurgists) is very important.
We have 220 grit and P220.
Ditto on some other grits. The P designation seems to be a finer grit.
What does the P stand for?





RE: Abrasive paper designation
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"Very interesting indeed, but tell me, Mr. Faraday, of what use is this electricity?" "Sir, you will soon be able to tax it."
RE: Abrasive paper designation
In the first link (have not looked at the second one yet) the table shows the P grades to be finer which is what I am observing.
In the discusion, it talks about Premium grade which could be confused with Eu9ropean or P-grade.
RE: Abrasive paper designation
http://mi