You might want to pick up some Scotchbrite pads as they are pretty useful too.
From the Unofficial BR FAQ:
SANDING
These are the methods that I use;
4 Step:
1. Holes facing up, sand for 30 seconds
2. Rotate the ball 180° to where holes are facing down, sand for 30 seconds
3. Rotate the ball 90° , sand for 30 seconds
4. Rotate the ball 180°, sand for 30 seconds
6 Step
1. Same as 4 step
2. Same as 4 step
3. Same as 4 step
4. Same as 4 step
5. I use this step when I am trying to get a small length change because 1 grit smoother or courser is too big a step. I base the ball position off of my track and the desired change;
More length – sand parallel to track
Less length – sand perpendicular to track
6. Rotate the ball 180°
I find that using these 2 extra steps works better for me, when I use a bit of polish with courser grit, for slightly less length or with the current grit for more length, it becomes harder to replicate the surface.
POLISHING
I use the same ball positions as in my 4 step sanding method. I start by polishing for 30 seconds per step and adjust from there for desired reaction. If I need to remove a small amount of polish I use a white scotch bright to achieve the slight dulling affect.
SCOTCHBRITE GRIT CHART (courtesy of Charlest)
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(?)
Green Scotch Brite is available EVERYWHERE. It's 600 grit.
Blue Scotch-Brite is considered to be about 1000 grit.
(The value inside the parentheses is directly from 3M.)
3M Chart
Less Aggressive --------> More Aggressive
7445 7448 6448 7447 6444 7446 7440
Finer Finish --------> Coarser Finish
TRIZACT GRIT CHART (Courtesy of Charlest)
A long while back when this confusion first arose I sent an email query to 3M who invented Trizact and manufactures it. This is their answer:
To extrapolate the micron to grit conversion from 3M:
A35 ~ 35 micron ~ 360 grit,
A10 ~ 10 micron ~ 1100 grit
A5 ~ 5 micron ~ 1600 grit
Trizact and micron(u) grading are two separate things. Trizact products
are graded on their own scale ranging from A6 - A160.
3M Superabrasives are micron graded, that is, measuring the average size
of an individual particle on that product.
Standard abrasive grading is based on the screen mesh used to separate
out the particles for a particle grade. In simplest terms, in a 1"
line of grade 24 product there are ~24 particles. In a 1" line of
grade 600 product there are ~600 particles.
In comparison, 9u=1200 grit, 15u=600, 20u=500, 30u=400, 40u=320
DULL-MATTE-SMOOTH-SHEEN
"Generally" classified as follows:
Dull finish: below 600grit sand paper and green scotch brite
Matte-smooth finish: Between around 800grit and 1200grit sand paper or grey scotch brite
Sheen: finer than 1200grit
Best way find out the actual box finish is to contact the manufacturer.
http://www.ballreviews.com/Forum/Replies.asp?TopicID=74110&ForumID=16&CategoryID=5--------------------
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I just want 2C was'zzub.
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I am the SGT Schultz of bowling.
"I know nothing! I see nothing! NOTHING!"
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Edited on 4/11/2005 9:44 PM
