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Old 07-21-2019, 8:29pm   #1
Defib1961
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Default Sand/Media blasting question.

I ran a media blasting cabinet for years, yer go. Problem is, it was operated off of an industrial compressor. We ran 90 pounds of pressure in the thing. Worked great

Now, I bought a small 40-pound capacity cabinet and I am running it off of a small 20-gallon compressor. At 100 psi, I can work for maybe a full minute before the thing kicks back on and I have to wait for the pressure to build up again.

Any suggestions on what size compressor would be good, better, best?

TIA
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Old 07-21-2019, 8:32pm   #2
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What are the specs on the cabinet you're using now?
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Old 07-21-2019, 8:35pm   #3
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If you have a decent motor and pump; just add a larger tank for more volume.
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Old 07-21-2019, 8:41pm   #4
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Better:

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Old 07-21-2019, 10:00pm   #5
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Better:

This. Go big, or go home.
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Old 07-22-2019, 3:06pm   #6
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5hp 80 gallon min.....9.5 CFM at 90 PSI for 40 lb and depends on media used
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Old 07-22-2019, 7:11pm   #7
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I suspect the media cabinet owner's manual will have a suggested minimum CFM requirement at x pressure listed inside; or on their website. Go one size larger than minimum; the compressor will be happier for longer if it does not need to run WFO all the time just to keep up.
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Old 07-23-2019, 8:08am   #8
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Quote:
Originally Posted by JRD77VET View Post
What are the specs on the cabinet you're using now?


It is just a small 4.5 cubic foot cabinet
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Old 07-23-2019, 8:58am   #9
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If you can lower the pressure at the gun, you may can get away with what you have for a short while. I think most shoot at 90PSI at the gun? A 2-stage, 80 gallon would be the minimum if you plan to do a lot of blasting. The more the compressor runs the more heat builds up in the air lines and may cause trouble with your blasting media. If it's only for a few projects maybe you can get away with it. If you are planning on doing a lot of blasting you will need to upgrade.
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Old 07-23-2019, 7:00pm   #10
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Quote:
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It is just a small 4.5 cubic foot cabinet
Does it have air requirements listed?
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Old 07-23-2019, 7:30pm   #11
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Does it have air requirements listed?
Nope. This was just a cheapie I got from Harbor freight. Using it to clean the aluminum ant hills
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