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View Full Version : Scotch-Brite recommendations sought.



Boucher
05-25-2012, 10:36 AM
Looking at an 8Ē Scotch-Brite Deburring wheels. There are different hardnessís and Al Ox and Silicone Carbide abrasives.
Your thoughts and recommendations would be appreciated.
This is to be used on a 1725 RPM Buffer to remove light rust.

lazlo
05-25-2012, 10:50 AM
I *think* the colors are consistent between the pads the Roloc discs. Tan and up are silicon carbide:

http://bbs.homeshopmachinist.net/showpost.php?p=586755&postcount=23


Scotchbrite pads are impregnated with aluminum oxide. The finest pad I've seen is the 7445 white pad, which is 1,000 grit.

The most common Scotchbrite pad seems to be the 7447 Maroon pad, which is 320 grit. That will definitely take some metal off pretty quickly.

From my notes:

SCOTCHBRITE GRIT CHART
3M Scotch Brite Nylon Pads:
7445 - White pad, called Light Duty Cleansing - (1000) 1200-1500 grit
7448 - Light Grey, called Ultra Fine Hand - (600-800) 800 grit.
6448 - Green (?), called Light Duty Hand Pad - (600) 600 grit
7447 - Maroon pad, called General Purpose Hand - (320-400) 320 grit
6444 - Brown pad, called Extra Duty Hand - (280-320) 240 grit
7446 - Dark Grey pad, called Blending Pad (180-220) 150 grit
7440 - Tan pad, called Heavy Duty Hand Pad - (120-150) 60(?)

loose nut
05-25-2012, 11:16 AM
Check out these cat. pages, it may give you an idea. There are other brands beside Scotch that may be cheaper.



http://www.pts-tools.com/cgi/CGPTSRFC?PAMODE=*ENTR&PMPAGE=K0698.PDF&PMREFORMAT=Y&PMTYPE=CATALOG&PARTPG=CGPTSRIM

John Stevenson
05-25-2012, 11:26 AM
Check out these cat. pages, it may give you an idea. There are other brands beside Scotch that may be cheaper.



http://www.pts-tools.com/cgi/CGPTSRFC?PAMODE=*ENTR&PMPAGE=K0698.PDF&PMREFORMAT=Y&PMTYPE=CATALOG&PARTPG=CGPTSRIM

Why no prices ?
I know they are expensive, 6" wheels here go for £28 to £36 a pop.

lakeside53
05-25-2012, 12:34 PM
I've only every used the 3M EXL carbide abrasive versions, and they work great on stainless or any steels. Bit aggressive on aluminum and brass. Maybe Al (or a finer carbide) would be better on those.

Enco has them listed and when combined with discount coupons they aren't too bad ($55-60 iirc) when you consider they will last "years". I use the 6 inch on my Baldor 8 inch buffer (1750). I'd love some 8's, but not until these wear out, if they ever do.