UltraPolishing, Inc.
640 Pratt Ave North
Schaumburg, IL 60193
Tel: (847) 352-5249
Fax: (847) 352-4052
 
Finishes We Provide
Click the finish for details
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Version
Finish/Description
Grade #1 Diamond Buff 180 Grit Paper Finish
600 Stone Finish
Grade #6 Diamond Buff
Grade #12 Diamond Buff 400 Stone Finish
600 Grit Paper Finish 320 Stone Finish
400 Grit Paper Finish 220 Stone Finish
320 Grit Paper Finish 150 Stone Finish
240 Grit Paper Finish Dry Blast Finishes
Cross Reference of Finishes    

A-1 Grade #1 Diamond Buff   Back to Top
The finest diamond finish mostly used for finishing clear lenses, optics and critical cosmetic parts.


A-2 Grade #6 Diamond Buff  
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Close to an A-1 diamond but with less shine then A-1 diamond.  Typically used on molds that produce cosmetic parts.


A-3 Grade #12 Diamond Buff
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Close to an A-2 diamond but with less shine then A-2 diamond.  Typically used on molds that produce cosmetic parts that don't require a high finish.


B-1 600 Grit Paper  
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The highest finish before diamond process. Mostly used on highly cosmetic parts that are chrome plated or painted. (Close to A-3 diamond with a directional pattern)


B-2 400 Grit Paper  
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Close to a B-1 paper finish, but with a deeper directional pattern.  Less shine then a 600-paper finish.


B-3 320 Grit Paper  
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Almost like a B-2 paper finish, but with a slightly deeper directional pattern.


B-4 240 Grit Paper  
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Deeper directional pattern then 320 paper finish typically used after stone for ease of finishing and appearance.


B-5 180 Grit Paper  
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Deeper directional pattern then 240 paper finish typically used after stone for ease of finishing and appearance.

Note: Please keep in mind that Paper grit finishes are not equivalent to their Stone counterparts.  (Example: A 320 paper finish = approx. a 600 stone finish, 320 paper is twice as fine as 320 stone.)

C-1 600 Stone Finish   Back to Top
Fine smooth finish mainly used on small detailed areas where paper finish is not feasible.


C-2 400 Stone Finish
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Slightly rougher finish then 600 stone.  Mainly used for removal of fine Machined finishes, where rougher stones may not be necessary to use.

C-3 320 Stone Finish   Back to Top
General purpose starting and finishing stone to remove machined finished.


C-4 220 Stone Finish
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General purpose starting stone to remove rougher machined finishes.  Deeper finish then 320-400 stone may be used for final finishing.


C-5 150 Stone Finish  
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Mostly used to remove very rough machined finishes.


Dry Blast Finishes
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Dry Blast finishes may very due to material blasted, the amount of pressure used and at what distance Blast is applied. Keep in mind that blast material will break down and can’t be used indefinitely to achieve same results at given specification.


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Cross Reference of Finishes 
Charmilles Micrometer Microinch Rms
-2 .08 3.14 3.9
-1 .09 3.54 4.4
0 .10 3.94 4.9
1 .11 4.33 5.4
2 .12 4.72 5.9
3 .14 5.51 6.9
4 .16 6.29 7.9
5 .18 7.09 8.9
6 .20 7.87 9.9
7 .22 8.66 10.8
8 .25 9.84 12.3
9 .28 11.02 13.8
10 .32 12.60 15.8
11 .35 13.78 17.2
12 .40 15.60 19.5
13 .45 17.60 22.0
14 .50 19.60 24.5
15 .56 21.60 27.0
16 .64 25.00 31.3
17 .72 28.10 35.2
18 80 31.20 39.0
19 .91 35.50 44.4
20 1.01 39.40 49.3
21 1.12 43.70 54.6
22 1.28 49.90 62.4
23 1.44 56.20 70.3
24 1.60 62.40 78.0
25 1.81 70.60 88.2
26 2.03 79.10 98.9
27 2.24 87.40 109.2
28 2.54 99.10 123.9
29 2.84 110.80 138.5
30 3.15 122.90 153.7
31 3.60 140.40 175.5
32 4.05 158.00 197.5
33 4.50 175.50 218.8
34 5.10 198.90 248.6
35 5.70 222.30 277.9
36 6.30 245.70 306.2
37 7.20 280.80 351.0


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