Polishing notes on a drawing
Polishing notes on a drawing
(OP)
Hello, everyone,
I am looking for a reference to the definitions of P1, P2 and P3, which describe the levels of polish applied to one or more faces. From memory, P1 means remove gross defects such as scratches and P3 is a mirror finish, with P2 somewhere in the middle but can anyone be more specific?
Thanks in advance,
Jon
I am looking for a reference to the definitions of P1, P2 and P3, which describe the levels of polish applied to one or more faces. From memory, P1 means remove gross defects such as scratches and P3 is a mirror finish, with P2 somewhere in the middle but can anyone be more specific?
Thanks in advance,
Jon
JHTH
NX 7.0.1.7 + TC 2007





RE: Polishing notes on a drawing
I can't recall any "grades" being specified or discussed in ASME B46 or Y14.36, so maybe it's a ISO thing as shown at http
Why not just call out the surface finish requirement in terms of Ra, Rz, etc? I figure any "grade" will eventually point back to a quantifiable level of finish.
RE: Polishing notes on a drawing
Of interest may be the standards for surface finish, see the Wikipedia article, which has references to the relevant ASME and ISO standards. Note that one of the callouts for "lay" (which would go inside the square root symbol for surface finish) is a "P" - for particulate:
http://en.wikipedia.org/wiki/Surface_finish
RE: Polishing notes on a drawing
I'll try to contact someone there but in the meantime if anyone can advise on this I'd be very grateful.
Thanks,
Jon
JHTH
NX 7.0.1.7 + TC 2007
RE: Polishing notes on a drawing
http://re
However I am not sure if this is what you are looking for.
RE: Polishing notes on a drawing
Cheers,
Jon
JHTH
NX 7.0.1.7 + TC 2007
RE: Polishing notes on a drawing
The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.