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Old 05-09-2007, 05:38 PM
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Sandblast Cabinet Coating

I'm building a sandblast cabinet out of some very nice plywood at school. The plywood has a thin sheet of veneer on top of it (it is designed for building kitchen cabinets). It is coming along great. All the joints are smooth and it looks like a professional built it. I am concerned that the veneer sheet will wear off over time due to the sand hitting the walls of the cabinet when in use. I'm getting graded on this for looks and finish. I'll be using clear lacquer on the outside surfaces. But what about the inside? I need a material which will go on smooth and be hard as a rock when finished - I want to be able to protect the grain of the wood, not just paint over top of it. Is there any material out there that will suffice for the job? By the way, you have to be very careful when sanding the plywood because if you sand too much, you sand through the veneer and into the layer of plywood underneath it - this is why I am concerned that sandblasting will just eat through the veneer after the first use.

Any opinions?

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Old 05-09-2007, 09:53 PM
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I believe that even a powder coated steel cabinet will be bare in just a couple uses, so I'd just use some sheet steel with a rattle can finish over it. Should look nice for the grading, but I wouldn't use it before the grade comes out on it...


In a while, Chet.
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Old 05-09-2007, 10:23 PM
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I can't think of anything that will not wear off in short order, I mean we are talking abrasive blasting here that's what the stuff is supposed to do.
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Old 05-09-2007, 10:24 PM
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Have it sprayed with truck bed liner . That stuff won't come off easily even with sandblasting. Or line it with rubber sheeting. You shouldn't be shooting directly at the cabinet, so it will just be overspray that hits it.

later, mikey
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Old 05-10-2007, 12:28 AM
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Do they sell bed liner in aerosol cans? I was thinking of maybe even using undercoating which is sold in an aerosol can.

any more comments?
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Old 05-10-2007, 12:56 AM
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Quote:
Originally Posted by stinger12
Do they sell bed liner in aerosol cans?
Not the good stuff that'll work in a blast cabinet. That bedliner material is a 2 part material sprayed with a pump setup with heated hoses and a special gun so it will flow.

Quote:
Originally Posted by stinger
I was thinking of maybe even using undercoating which is sold in an aerosol can.
No ..that'll make a goopy mess out of the inside of your cabinet, and your media

Here is a link to a company that sells blast cabinets.
Note the optional coatings and accessories.
http://www.nortonsandblasting.com/nsbbcprofinopt.html


I'll bet the stuff they call ultrawear is bed liner.

Later, mikey
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Last edited by powerrodsmike; 05-10-2007 at 01:06 AM.
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Old 05-10-2007, 07:52 AM
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Definitely not the rattle can undercoating because it will contaminate your blast media which will cause problems on any parts that must be painted after blasting. NEVER recycle media that has been used to blast undercoating, I found this out the hard (and expensive) way.
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Old 05-10-2007, 11:04 AM
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Actually the sand eats better at a hard surface than a soft one. The sand just bounces off the soft stuff. That is how they make grave markers. Cut out the letters in rubber sheet, sand blast the stone so it wears away the remove the rubber and you have a tombstone. So maybe some rubber gasket sheet or go to where they make tombstones and see anout that rubber.
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Old 05-17-2007, 05:27 PM
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IT'S A SAND BLAST CABINET!!! ...WHY would you care? I guarantee if it's like mine inside a week you won't care what the inside looks like! *G* ...But RPM hit it on the head ...the harder the sides the more the sand will eat at it. I used latex house paint(white), been on for over a year and still not eaten thru. But I ain't directed the discharge directly at it either. Can't say that for the widow though, pretty frosty! *G* Good Luck!
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