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I picked up a bag of glass beads today to try out and was wondering what pressure I should use so as to not "break" the beads. They are #5 if it matters.
Thanks.
Thanks.
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Re: Glass bead question
Pressure & media selection depend on what job you're doing... If you're trying to get paint/rust off a steel part, crank the pressure up. If you're working on something delicate to remove oxidation without 'eating' into the natural as-cast finish, turn the pressure WAY down and keep the gun at a healthy distance from the surface of the part (a foot or so away). Most find a working pressure in the 20-40 psi range covers the bases... -
Re: Glass bead question
Thanks Jack. Thats good advice to turn down the pressure on the more delicate jobs. However I thought that if the pressure was too high that the beads would break and become useless.
I'm experimenting on "re-skinning" alternator housings. I took an old housing and lightly sandblasted it with some very old and well used sand and then hand brushed it with a stainless brush and was quite suprised at how close it is to a vigin housing that I have. The texture and shine looks the same but the color is slightly off. Thought I'd try blasting it with glass now and then brush it and see how that works.
GregComment
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brushing exposes the silicon
The brushing wears down the aluminum which is soft and leaves the silicon crystals standing out, thereby giving a darker color. This was similar to the cylinder wall prep used on the Reynolds aluminum Can-Am blocks that had no steel cylinder liners.
MarkComment
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