Handheld bead dispenser that allows for easy and repeatable distribution of beads into tubes for homogenization workflows. Dispenses one 1/4 inch bead, or two 1/8 inch beads.

Re-mixed from the following original model: https://www.printables.com/model/905028-glass-bead-dispenser/collections

Improved version created by Sasha Launey.

Non-3D printed materials needed:

- Screw and Nut (M3)

- 50 mL centrifuge tube

- 1000 µL Pipette tip

Assembly:

- Hold the outer case with the opening facing towards you.

- Slide the nozzle part into the outer case, with the nozzle on the right side. Pins should snap into place.

- Place the disk into outer case over the nozzle part. The hole to dispense the beads should be on the right.

- Place the adapter in the outer case over the disk.

- Secure the parts together using a screw and nut.

How to Use:

- Fill a 50 mL centrifuge tube with beads and attach the assembled adapter.

- When the disk tab is pushed to the left, it is in a closed position and allows beads to be collected into the well.

- Push the disk tab to the right to dispense beads.

Changes to the original:

- Made pegs on nozzle fit easier.

- Adjusted the nozzle to work with 1000uL pipette tip easier.

- Made two sliding disk inserts: one that dispenses two 1/8 in. beads at a time, one that dispenses on 1/4 in. beads.