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In Mold Finish we are proud to be an aproved source
to polish OEM automotive lens molds and other cavities either EDMīd or
machined, plated or bare metal. Also, those requiring to improve
aspect, eliminate scratches, corrosion, etc. Our specialty is A-1 mirror
or better, but we cover the complete line of SPI finishes according to
customerīs specifications..
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S.P.I.Ū MOLD FINISH
GUIDE
FINISH VALUE Ra
APROXIMATE
NO. S.P.I. MICROINCH REFERENCE
A-1 0-1 Diamond
paste #3
A-2 1-2
Diamond paste #6
A-3 2-3
Diamond paste#15
B-1 3-4
Emery #600
B-2 4-5
Emery #400
B-3 9-10
Emery #320
C-1 10-12 Stone #600
C-2 25-28 Stone #400
C-3 38-42 Stone #320
D-1 10-12
Glass bead #13
D-2 26-32 Alumina #240
D-3 190-320 Alumina #24
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