Low-cost Lab Rotator 3D Printer Model
The file 'Low-cost Lab Rotator 3D Printer Model' is (f3d,stl) file type, size is 2.7MB.
The file 'Low-cost Lab Rotator 3D Printer Model' is (f3d,stl) file type, size is 2.7MB.
I'm doing a lot of magnetic bead DNA purification protocols, and they frequently have a step that requires rotating the tube at a low speed for 5-10 minutes. Until now, I'd been taping the tubes to the rotator shaft of the forgotten hyb oven in the hood of the lab next door. Then I realized I had a set of spare parts laying around that could do the job for me!
This lab rotator is designed for light duty around the same DC gear motor and PWM board I used in my low-cost remix of the Adafruit Crickit lab shaker. It uses a USB charger as a power source, and two ball bearings to keep the motor shaft captive. I designed it with a modular, magnetically-attached tube holder so that I could swap it out for different tube sizes in the future. There are spaces for eight magnets, but in practice a pair of 1/8" x 3/8" magnets or four 1/16" x 3/8" magnets per side are more than sufficient.
The version the I built uses a 1:48 geared motor, but the 1:90 geared version would be more appropriate for this application.
Parts needed:
| rotator.f3d | 2.2MB | |
| rotator_bearing_housing.stl | 313.4KB | |
| rotator_housing_face.stl | 147.6KB | |
| rotator_housing_shell.stl | 147.6KB | |
| rotator_hub_nut.stl | 7.1KB | |
| rotator_shaft.stl | 274.2KB | |
| rotator_tube_holder.stl | 850.3KB |
