Small fire extinguisher Sand blaster

[mr95gst]

What if you got rid of the "homemade hollow bolt connection" and Tee'd the hollow tube off the air inlet? That would keep you from having to put another hole in the tank. Might make it hard to repeatable fill with sand though.

If you have not seen it already, checkout the video called "Sandcarving pressure pot-101" on youtube. It has a lot of information. What was particularly interesting is how sometimes you might want different pressures in the media tank vs the feed line.