Posted by Wardner on April 08, 2011 at 01:12:06 from (4.154.251.153):
In Reply to: Sand Blast Machines posted by Wilks54 on April 07, 2011 at 14:38:59:
I am a retired sandblasting contractor. I never bought a factory blast pot because they were overpriced and they under-performed. OK, I take that back. I did buy a 20 ton shipyard unit at auction with six outlets but I made alot of alterations.
I am partial to Thompson valves sold by Schmidt. The erodible parts are made of tungsten carbide and last for years of constant use. I used to pay $600 for them. The air valves were full throat ball valves with air-actuated operators.
For a part timer or hobbyist, I suppose anything will do.
You will save alot of sand with remote controls. You will also save time and aggravation should the mixture go lean. The flow can be restored with a quick off/on using a feather-touch 3-way valve at the end of the hose. Tungsten carbide nozzles are worth the money. Use self-grounding (static electricity suppression) sandblast hose with sandblast hose couplings. And don't skimp on an air-supplied helmet and ear plugs.
If you get set up properly, you can make some money and remain healthy. I am in good shape (including hearing) after 30 years of running 750 CFM @ 125 PSI. Your biggest time saver will be using the largest pot you can. There is less need to stop or indulge yourself with a break. Time flies when you are making money. A four ton pot will run all day without reloading. Buy bulk sandblasting sand if available.
Use eBay to get pricing on equipment. Don't forget the eBay "completed listings" too. If you want to build a pot, look at air receivers or propane tanks.
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