Drum for Rock or Media Tumbler

thingiverse

This is an interchangeable drum with integrated agitators for a media tumbler (rock tumbler). I designed it for my Affordable Rock Tumbler Build, but I wanted it to be customizable so I can adjust the size without changing all the variables and sizes for every little piece. They call this parametric design? I don't know, I just think it's simple. The DrumSize vector is the height (DrumSize[0]) and width radius (DrumSize[1]) of the drum. If you want your drum to be 100mm x 100mm then you need to set the vector to [100,50] because radius is half the width of the circle. WallThick is obviously the wall thickness - how thick do you need the walls of your drum to be? finCnt is the number of agitator fins inside the drum. The more or less doesn't matter, the script will dynamically adjust the spacing and size of the agitators. The agitator fins are 5% the width of the drum wide and 10% the width of the drum long (how far they protrude). The lid is fixed to have a lip that is 10% the height of the drum, which gives plenty of coverage in my tests so far to keep a good solid connection while tumbling around for days on end. $fn is the number of fragments a circle is broken into - this affects how smooth the curves and angles will be. It's an OpenSCAD built-in variable, but I include it because some people like to adjust this variable. I've found 60 to be pretty clean, but keep in mind that the more fragments you break it into the larger the resulting files and gcode will be and the longer it will take Customizer to render it. If Customizer is working (as of this writing it's not) play with it and have some fun. EDIT: I added a lidTol variable for lid tolerance - a positive value here will increase the inner diameter of the lid, you can use this to account for how snug or loose the fit of the lid is to the drum.