compressor-sandblasting issues

[Highpower]

WillieL

I'm not talking about a industrial blasting pot.....

I'm still using a blaster made out of a propane bottle.

Well that is certainly a horse of a different color now isn't it? :biggrin:

Thanks for the expanded explanation Paul. Very crafty! :thumbzup:

 

[Pacer]

In your post you said that the gun wont pick up the sand, thinking the small out put of the compressor to be the problem -- I dont think that the whole problem. If the compressor is putting 90psi to the gun, even if for only a few seconds it should pick up the media, If you arent able to get any flow of media at all at that short flow of air, then there is something wrong.

I used one of these -- http://www.ebay.com/itm/8pc-Sandbla...8?pt=Sanders_Sandblasters&hash=item43aac1eb08 -- for years running off a 2hp
Sears 20gal tank that was rated the same as yours. I would pour sand/media in a 5 gal bucket and puill the media from it. I could get 1 to 3 minutes of use (depending on what I was trying to clean) before having to let the compressor refill. It is a pain, but I ran a many bag of sand through that set-up.

 

[Maglin]

Most sand blasters use a very broken design. The HF sand blaster is only good for it's cabinet and even then it's laughable. You will need a liquid bed pressure pot. I have a buddy that using silicon carbide abrasive and only 30 PSI of pressure with a press pot built out of an old propane tank. It's impressive. You also will want to use real sandblast hose if you use it more than 3 hr. a year. Other wise the costs of replacing your hose gets enormous. I wish I could tell you how to build a liquid bed pressure pot but my buddy builds them for a living and has yet to share his secrets with me. I have seen him run his blaster for hours with a 5 HP 2 stage compressor that is 40 years old.

 

[Davo J]

My home one is like in the link and works fine. I use glass or sand in mine and it will slowly stop sucking as the pressure goes down. Some times I find if the tube is in to deep, it will stop the flow so try that.

Dave

 

[geotek]

Two things might be preventing the abrasive from feeding. Try a different "sand". Some sandblasting sands, like Zercon, are very heavy and hard to feed. The other problem with the small compressor is moisture. On large tanks, the tank does a good job of de-watering, not so on small tanks. The water makes the particles stick together and clog up the works.