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Sand blasting on aluminum

We do antique finish by doing sand blasting on aluminium. But we face a lot of problems after doing it; a lot of pin holes are visable after the sand blasting. please advice us what pressure & what kind of grit we can use?

sand blasting on alu
Plating shop employee - Sharjah (UAE)
January 11, 2008

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At our shop we use a 80 grit glass bead. works for what we perform, also our operating pressure in @ 65-95 depending on what we are blasting at the time.

Ryan Cook
Toccoa, Georgia
January 12, 2008

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First of two simultaneous responses -- January 14, 2008

If you are looking for an alternative to blasting, look at mass finishing equip. using dry organics and abrasives media. Our product 6A. Blasting presents a lot of problems. If you continue to use blasting you will need a spherical shaped media and I'm not sure you will get the same finish you are looking for.

AF Kenton
retired business owner - Hatboro, Pennsylvania

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Second of two simultaneous responses --

Use some SiC under 35 psi and not longer of 5 sec.

Jose Castellanos
- Minneapolis, MN, USA
January 14, 2008