Coal slag on aluminum

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12 Jan 2011 10:51 #421692 by AtLarge
Coal slag on aluminum was created by AtLarge
I have various aluminum engine parts I would like to clean up. Maybe even paint. I have access to a blasting cabinet with TCC Black Blast (coal slag) in it. I can't find any information on whether or not this is good or bad on aluminum. I didn't really want to replace the media. Anyone know for sure? TIA.

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  • kz1k
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12 Jan 2011 11:25 #421696 by kz1k
Replied by kz1k on topic Coal slag on aluminum
baking soda works well imo.

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WHY FART AND WASTE IT, WHEN YOU CAN BURP AND TASTE IT?

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  • porchev914
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12 Jan 2011 14:20 #421738 by porchev914
Replied by porchev914 on topic Coal slag on aluminum
That coal slag is great for etching concrete, but I suspect it'll tear the hell outs aluminum. I would suggest a test piece of aluminum first, that way if it is too aggressive you won't damage a good bike part :)

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12 Jan 2011 14:42 #421742 by testarossa
Replied by testarossa on topic Coal slag on aluminum
Use the coal slag on the parts that you will paint, but not the other stuff. It definitely imparts a texture to the surface that would be very difficult to polish off. The texture does give plenty of tooth for paint adhesion however.

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12 Jan 2011 16:52 #421770 by AtLarge
Replied by AtLarge on topic Coal slag on aluminum
Rats. Glad I asked. Thanks Guys.

1973 Honda CL70-K3
1975 Kawasaki 350 F9-C
1983 Kawasaki KZ750-K1
1994 BMW K1100RS
2008 Suzuki GSX1300-BKK8 #1120

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