Bottle / tube roller with adjustable sizing. Bottle is spun by one driveshaft connected to a motor by a timing belt. Rubber o rings provide enough grip to turn the bottles. Commercial bottle rollers price in the 1k$ range https://www.thermofisher.com/order/catalog/product/88881003.

BOM

4x 608zz bearings

2x 3d printed carriage

2x 3d printed joint moint

2x 3d printed rail mount

4x 3d printed drive grip

4x 3d printed end stop

4x rubber o-rings

10x m3 screws

12x sheet screws

5/16'' metal shaft

1/4'' metal shaft

Mounting surface( i used a 12x12 birch board)

Estimated Cost ~$65.18

Cost breakdown: 0.159kg PLA at 20$/kg=3.18, bearings=7$, steel rods=10$,orings and screws=5$, motor and controllers~40$