Suggest the Best sandblaster for the DIYer

[unspankable]

Hello all,
I have a 3hp contractor series 20gal 240v single stage compressor rated-
11cfm@125psi
12cfm@40 psi and
Free air 14 cfm

What is my best option for sandblasting with this compressor? Siphon feed or a small pressure feed system? Anyone have any recommendations?
I'm probably getting another receiver to give me a bit more volume first.
Main project is to blast an engine bay and engine parts at this point but would like it to be versatile for other future projects.
Thanks!

 

[Steroblan]

You will need to get a small siphon unit. Your size unit is marginal at best for sandblasting. 1-2 minutes at most duty cycle on blasting. Once your pressure drops below 90-100 psi your quality drops off and then your just wasting your blast media. Also, get an air drier. Be very careful on additional capacity tanks since they can be a serious explosion hazard if not certified for what you are doing.

 

[unspankable]

You will need to get a small siphon unit. Your size unit is marginal at best for sandblasting. 1-2 minutes at most duty cycle on blasting. Once your pressure drops below 90-100 psi your quality drops off and then your just wasting your blast media. Also, get an air drier. Be very careful on additional capacity tanks since they can be a serious explosion hazard if not certified for what you are doing.

anything i should look for in a siphon feed gun?