Author Topic: Blasting media - glass bead, soda etc.  (Read 7986 times)

Offline Tim

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Re: Blasting media - glass bead, soda etc.
« Reply #20 on: Sep 15, 2007, 10:03:05 »
I'm not adverse to buying more/different shot for the job.

I need to clean up engine cases, so I don't want to do anything radical, but I want a nice finish when I'm done on the exterior.  So, is a multi-stage shot an option?  I understand it's not like sanding, where you start with a corse grit and move to a finer grit.

I haven't used the glass yet - I'm also wondering about recommended PSI/CFM.  You can tell I've never done this before.
"Quality . . . you know what it is, yet you don't know what it is. But that's self-contradictory. But some things are better than others, that is, they have more quality. But when you try to say what the quality is, apart from the things that have it, it all goes poof! There's nothing to talk about. But if you can't say what Quality is, how do you know what it is, or how do you know that it even exists? If no one knows what it is, then for all practical purposes it doesn't exist at all. But for all practical purposes it really does exist."

Offline Freak Daddy

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Re: Blasting media - glass bead, soda etc.
« Reply #21 on: Sep 15, 2007, 15:50:44 »
Sandblasting is all about the CFM, the PSI only increase the speed and impact of the media.

Cafe_to_go you may have an issue with CFM, nozzle are normally match with the airjet to increase the suction of the media.
Changing out the nozzle is not always the cure if you don't have the volume of air. What is the screen size of the walnut you are using?

To get the hose in sand type of media up to work better, it a quick fix of inserting a pipe in the end of the hose then into the media and drilling a small hole in the pipe just above the media to allow a air and media mix. Much kike a carb mixing the fuel and air, it prevents purdging. (too much media and not enough air).

Tintin feels free to call me next week at work and I'll fix you up.

Old Guy, Old Motorcycle