Sand Blasters Pressurized vr. Gravity feed ?

[Larry in GA.]

My small sears siphon feed has gave up the ghost Plus is to small. The local TSC has the Pressurized on sale for $ 9.00 more than the Gravity feed. Which one is the better one for down here in the humidity of south GA.?

Second question What is the difference between SCFM and CFM?
Larry

 

[Pete-N-Ga]

I have a pressure type from Northern Hydraulics that I've used for several years. Just gotta keep the sand dry. Any moisture at all and it makes chunks that won't go through the passages. I haven't tried the gravity feed so I don't know how they work. If the humidity is low and sand stays dry the pressure type works fine. What part of Ga are u in?

 

[OKDAD]

I have a pressure type made by TIP Tools that I use here in Oklahoma. Works quite well but needs a large compressor.

 

[Larry in GA.]

Pete I'm a little North east of Valdosta
Larry

 

[5NSlezWI]

I have a gravity feed that I bought a few years ago from Harbor Freight. It works well as long as you keep the sand dry. I also recycle the sand occasionally, but it's a good idea to sift out any rust pieces. Those tend to create some hangups too.

 

[Anonymous-0]

How do you recycle the sand?

 

[Anonymous-0]

SCFM = standard cubic feet per minute, means cfm under standard atmospheric conditions

CFM = cubic feet per minute

don't worry too much about the difference since under most conditions there isn't much difference

 

[sgt bull]

I have a pressure pot, from TIP mfg, (now sold to BRUT mfg). It has been absolutely wonderful. I built a cabinet in such a way that I can use the pressure pot in it, or wheel the pot outside to do large pieces.
I use my "new" sand in the cabinet a few times, screening it each time before putting it back in the pot. It soon begins to lose its edge, and becomes more powdery, and less effective. I then wheel the pot outside and find some lowplace in the drive, blast large pieces, just letting the sand go. I get the most use out of the sand that way.
I've been sold on the carbide tips. They cost considerably more, but last far longer than a comparable money's worth of ceramic.
I have a moisture trap in my air system, and have very few problems with moisture induced clogs. I hade more problems with insects getting through the top opening of the tank when it is sitting idle and unpressurized, and causing a clog. I now keep it covered when not in use and virtually never have a problem.
In my opinion, it uses less air than a siphon type, (I'm not sure if you're talking about that when you say "gravity" type, but think you are.)
and seems to have more aggressive cleaning action. Again, just my opinion.

 

[John (TR)]

I have a gravity feed cabinet and pressure pot for outdoors. There's no comparison, the pressure pot is considerably more aggressive on the same air pressure. I run them both at 125lbs