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-   -   20 gal sand blaster help??? (http://www.hotrodders.com/forum/20-gal-sand-blaster-help-221677.html)

39chevy 07-14-2012 02:46 PM

20 gal sand blaster help???
 
I think I have eastwoods sand blaster, anyways my problem is when it starts to go (sometimes) it really starts to peel off nice then quits after maybe 10 seconds. Then if I can get it to go again, maybe air just comes out maybey 1/2 pressure only. I have cleaned out everyhose connection 2 or 3 times each, changed sand I'm at my witts end. What am I doing wrong, any suggestions would be great, thanks Dana

swvalcon 07-14-2012 04:30 PM

What are you using for sand? Some of the smaller sand blasters need real fine sand.

39chevy 07-14-2012 07:23 PM

At first I ran silaca sand, then medium play sand, no difference. I think my sb is 30 gal. I don't think it matters. Thanks

John long 07-14-2012 07:41 PM

I have found that the cheap siphon feed blasters are not as effected by moisture in the line because the compressed air does not go through the sand. In the pressure pot sandblasters the compressed air is routed through the pressure pot. Therefore, any moisture that condenses will end up in the sand itself causing it to cake in the pot. The sand will not come out or will jam up in the hose. It is absolutely imperative that the air is dry with a pressure pot or you will end up spending your time cussing the thing instead of getting any work done.

John L

mi chael 07-15-2012 02:10 AM

I had the same problem. Check your air pressure. It needs to stay at 125psi all the time. I think the compressor needs to be at least 16 or 17 cfm to keep this up. When you first start up the air pressure will go down very quickly. On mine it has to stay between 125 and 65psi. What I did to overcome this is to put another compressor in-line. If you do, make sure you put the bigger 1 off the main in and the smaller 1 off the side. This effect works off of like spray painting. The bigger air will drag off the samaller 1.

Hope this helps.

mi chael.

TNshadetree 07-18-2012 02:19 PM

I had a ton of clogging and other problems until I purchased some good media. It made a world of difference. I was working myself to death trying to avoid clogs, shaking the hose, kicking and rocking the tank, trying different settings. The problem with play sand and most other garden variety sand is that they have clumps in them or the occasional large particle. Even when you strain them they can gang up and cause problems.

I bought some called Black Diamond from Northern tool. I was like night and day and it was impressive how much work I could get done when the blaster was working at high capacity for several minutes.

John long 07-18-2012 02:47 PM

Quote:

Originally Posted by TNshadetree (Post 1574920)
I had a ton of clogging and other problems until I purchased some good media. It made a world of difference. I was working myself to death trying to avoid clogs, shaking the hose, kicking and rocking the tank, trying different settings. The problem with play sand and most other garden variety sand is that they have clumps in them or the occasional large particle. Even when you strain them they can gang up and cause problems.

I bought some called Black Diamond from Northern tool. I was like night and day and it was impressive how much work I could get done when the blaster was working at high capacity for several minutes.

I agree with TnShadtree about using a good media. I use Black diamond also and it is very good but, You still MUST HAVE dry air in a pressure pot.

John L

boatbob2 07-18-2012 02:52 PM

dry air....
 
Hi,ive had all kinds of problems using a SB,i FINALLY bought 2 of the toilet paper water catchers And i run them close to SB,,and also changed to HF,BLACK DIAMOND,no more problems,


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