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25 Dec 2010 , It's a basic comparison of the grit size of various sharpening media , Nominal grit rating means for the a 1 micron diamond powder you will have a range of grits from 2 micron to way under 1/2 micron , I mean P400 (FEPA) just isn't close to 400 (CAMI) , I used a coarse diamond stone (#325)
Sheets of sandpaper with different grit sizes (40 (coarse), 80, 150, 240, 600 (fine)) Sandpaper or glasspaper are names used for a type of coated abrasive that consists of sheets , The FEPA system is the same as the ISO 6344 standard , Standards Committee (JIS), the micron grade (generally used for very fine grits)
Use Micron-Graded abrasive, eg 5 micron film or cloth instead of , they are FEPA-graded (P-Grit), which have higher size tolerance than Micron-grading system , Suggested main grits: 40, 80, 120, 240, 400, 800, 1200, 1500, 2000, 2500, , products from sandpaper to polishing cloth up to diamond polishing film that can.
, and honing processes using diamond cup wheels and diamond grinding wheels to , Superfinishing uses fine grit sized materials to achieve the desired finish , of FEPA, mesh, and micron sizing for some common larger abrasive grains , Mesh; 40/50; 45/50; 50/60; 60/70; 70/80; 80/100; 100/120; 120/140; 140/170; 170/.
Sizes of 220 grit (60 micron) and larger (macrogrits) are determined by sieving, while sizes of 230 grit and smaller (microgrits) are , FEPA (Europe) , 405 3M 40 micron diamond stone & belt , Scotch-Brite Abrasive Belt Equivalent Grits.
How does the micron measure compare to other grit measures? What about abrasive , The melt-rock contains diamonds and silicon carbide crystals , The FEPA F standard is for bonded abrasives - wheels - and does not apply to coated abrasiv , The Lee Valley green crayon is almost 50% grit that is over 40 micron!
A comprehensive, comparative table of abrasive grit sizes in common use, of different material , A comparison of grit sizes of belts, wheels, , FEPA (Europe) , 3M 40 micron diamond stone & belt , Scotch-Brite Abrasive Belt Equivalent Grits
Historically, grit size is equivalent to the “size” of the wire mesh screen used to sieve , FEPA (Federation of European Producers of Abrasive Products - late 60's) , 3M 40 micron diamond stone & belt "400" 40 F280 365 Medium diamond