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sandblasted cases

I glass bead blasted an aluminum pistol scope a few years ago so it would match my bead blasted handgun. That gave it a grey mat finish that held up very well w/o any further treatment even though the anodized finish had been removed. As for your engine cases, I dunno.....
 
Covers

Covers

DONT, I REPEAT< DONT SANDBLAST< It's far too abrasive,GLASSBEADS ONLY. I did my rear shaft with Sand and F........d it, I ended getting another one very cheap and beadblasted that, then polished it to mirror finish. heeeeeeed! the above warning, ONLY Sandblast frames/swinging arms.
 
heeeeeeed! the above warning, ONLY Sandblast frames/swinging arms.

Sand is only good for steel parts and thicker stuff at that. Do NOT sandblast sheet metal components as the blasting will distort the panels and they will not come back straight. Sand is far too aggressive for aluminum. If you want to keep the aluminum, that is. :)

Glass beads are acceptable for aluminum or steel parts.

Some plastic medias are also OK for aluminum, but you need to talk to the blaster about your parts and find out the specifics of what they are using.

Some of the slag medias are also OK for aluminum, but most are too aggressive.

Ground walnut shells are the least aggressive and will leave a nice semi gloss finish on most aluminum pieces. It also doesn't remove serious corrosion very well. And costs a fortune.

For all around aluminum/bike parts use, galss beads are the hands-down winner.


Mark
 
in reply

in reply

AHA! A man with knowledge! Nice reply to mine. Phil.
 
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