Dale Thompson
01-05-2006, 9:09 PM
Hi Folks,
For what it's worth, I think that this may have come up before but, at MY age, I'm not sure of ANYTHING! :)
I've sometimes wondered what the "grit" ratings of sandpaper actually mean in terms of surface smoothness. YEAH! I know! I've got too much time on my hands. ;) Anyway, the attached link should give you a pretty good idea.
As a reference, it seems that I remember from my "injunearing" days that a typical piston/cylinder was machined to about a 150 micro-inch finish. Anything smoother than that would not hold the required amount of lubricant. :eek: Please correct me if I am wrong! :o According to the link, that puts the piston/cylinder at about a 100 grit finish.
As always, I apologize for wasting your time! :o
http://sandingcatalog.com/cgi-bin/281D7773/mac/template.mac/loadHtmlPage?htmlPage=grit_grading.htm
Dale T.
For what it's worth, I think that this may have come up before but, at MY age, I'm not sure of ANYTHING! :)
I've sometimes wondered what the "grit" ratings of sandpaper actually mean in terms of surface smoothness. YEAH! I know! I've got too much time on my hands. ;) Anyway, the attached link should give you a pretty good idea.
As a reference, it seems that I remember from my "injunearing" days that a typical piston/cylinder was machined to about a 150 micro-inch finish. Anything smoother than that would not hold the required amount of lubricant. :eek: Please correct me if I am wrong! :o According to the link, that puts the piston/cylinder at about a 100 grit finish.
As always, I apologize for wasting your time! :o
http://sandingcatalog.com/cgi-bin/281D7773/mac/template.mac/loadHtmlPage?htmlPage=grit_grading.htm
Dale T.