Rotational Casting Machine (RotoCast)

thingiverse

This is a legacy device, I've uploaded all of the files used prior to moving to steel construction. We moved this to V2 using a garage door opener and larger pulleys and a dryer belt. V2 in action: https://youtu.be/LCR4AYFYvTU We then moved to V3 using a Rigid X5 cordless drill We are currently making V4 using Steel Tubing and a variable speed motor. I needed to make a hollow cast. I have a lot of 2X4's, PVC Pipe and 3D Printers. Using GT2 Belts and 3D printed pulleys can have some slippage which is why there are two belts. I use a 3M spray adhesive to make the belts have more stick. Components: 2 X 4's QTY 4 - 25.5" Inner Axis QTY 4 - 30.5 Outer Axis QTY 2 - 32 Frame Bottom L/R QTY 4 - 14.25 Frame Bottom L/R QTY 2 - 24" Frame Upright QTY 2 - 38" Frame front/back support QTY 1 - 35" Frame Center QTY 4 - 17.151300" - 24.557331" - Mitred at 54.5 degrees, for supports. This was just drawn that way, you could change sizes to use a 45 degree cut or build more of a frame to avoid angled cuts. 3D Printed Parts QTY 2 - Rotational Pulley QTY 2 - Stationary Pulley QTY 4 - Corner Pulley QTY 2 - End Cap QTY 2 - Short End Cap QTY 4 - Bushing QTY 9-16 - Spacer Hardware 2" and 3" Screws 623 Bearings or GT2 Bearings GT2 Belt Self tap screws to screw the plastic parts onto the pipe 1 Stick or some scraps of 3/4" Schedule 40 PVC pipe 2 PVC Elbows Staple gun (I stapled the GT2 belt to join it) Assembly should be self explanatory. Print Settings Printer: Various Rafts: No Supports: Yes Resolution: .24 Infill: 50% Notes: Limit perimeters to 2 and ensure you have thin walls or gap fill turned up. I hollowed out the pulleys to save on print time and material. Everything was printed in PLA with 25-50% infill at .24/ 3 top/ 3 bottom/2 outlines.