Insignificant Info - sort of - whatever!

[Dale Thompson]

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.

[Randy Meijer]

That link only took me to a home page. Never did see the sanding article you were trying to point us to??

[Chris Curry]

Randy, If you look down the banner on the right side you'll see a link 'Grit Comparison' in the bullet list. I'll bet that will get you very, very close.:)

Cheers, Chris

[Randy Meijer]

Thanks, Chris. you were correct. I'm going to try to repost the link and if it doesn't work, I will try a tinyurl. Thanks again. Randy

http://sandingcatalog.com/cgi-bin/C776DF20/mac/template.mac/loadHtmlPage?htmlPage=grit_grading.htm