Home-made sand blaster and modded glass engraving

 
  As can be seen from the picture, the device is made of a plastic bottle, water ball tap, T-joint and valve from spray gun. Some parts must be turned on a lathe. The insert represents an injector, area of low pressure appears in the point of convergence of tapered holes and air that got into the bottle through the hose is directed towards the area taking the sand grains along. The tap regulates sand modulus of flow.

 
  A screw-top of the same bottle is fastened to the mixer tap with a thread washer. My attempt to make the same screw-top of steel was a failure. Thus you’ll have to put up with necessity to change worn screw-tops. The only component part which I had to buy was a ceramic nozzle of a dental sandblast machine. The complete set costs 6 dollars and is sold in medical shops.