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Defib1961 07-21-2019 08:29pm

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?


JRD77VET 07-21-2019 08:32pm

What are the specs on the cabinet you're using now? :confused5:

Strats-N-Vettes 07-21-2019 08:35pm

If you have a decent motor and pump; just add a larger tank for more volume.

bill_daniels 07-21-2019 08:41pm


snide 07-21-2019 10:00pm


Originally Posted by bill_daniels (Post 1677970)

This. Go big, or go home.

allthrottleandsomebottle 07-22-2019 03:06pm

5hp 80 gallon min.....9.5 CFM at 90 PSI for 40 lb and depends on media used:D

markids77 07-22-2019 07:11pm

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.

Defib1961 07-23-2019 08:08am


Originally Posted by JRD77VET (Post 1677967)
What are the specs on the cabinet you're using now? :confused5:

It is just a small 4.5 cubic foot cabinet

Grey Ghost 07-23-2019 08:58am

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.

JRD77VET 07-23-2019 07:00pm


Originally Posted by Defib1961 (Post 1678321)
It is just a small 4.5 cubic foot cabinet

Does it have air requirements listed?

Defib1961 07-23-2019 07:30pm


Originally Posted by JRD77VET (Post 1678408)
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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