Friday, April 8, 2011
The balls bounce upward against the screen (thanks to the vibrations of the system), hitting the screen on a regular basis. The balls are made of rubber to reduce wear on the screen. I chose to solve the issue of binding by choosing a large enough screen so that clogging wasn’t an issue. This was done through trial and error, and no doubt will change as the material size of new powders varies.
My system is based on relatively accessible materials:
• 5 gallon bucket
• Brass screen (60 mesh; 8” diameter)
Setting things up: Place the machine over top of the bucket; place a plastic bag inside the bucket through the opening; press the screen into the opening, creating a seal between the plastic and the opening.