pMulti micropipette

Download a zip file containing all the model files. The total amount of each part that should be made is in the BOM.

Here is the complete Bill of materials (, ) for this guide.

Tools and Materials

Tools:

3D Printer (x1)
CNC Lathe (x1)
Drill (x1)
6 mm drill bit (x1)
M5 Tap (x1)
Silicone Grease (x1)

Materials:

20 mm diameter Delrin stock (x1)
PLA Filament 1.75mm (x1)

Parts

Tool-plate:
- pMulti tool-plate (x1) (source/TOOLPLATE-WEDGE-PIP2.stl)
- THSL wedge-plate (x1) (source/THSL-WEDGE-PLATE-COMP.stl)
- M6 x 8mm Set screw (x3)
- M5 x 8 mm Button Head Screw (x3)
- M3 x 16mm Screw (x4)
- M3 Hex Nut (x4)
- Alternatively, export and print the heat-insert variant from the tool-plate assembly file.
Tool parking wings:
- Parking wing base (x1) (source/TP-PIP-BASE-V2.1.stl)
- Parking wing (x1) (source/TP-JUB-WING-BASE.V3.stl)
- Parking wing (mirrored) (x1) (source/TP-JUB-WING-BASE.V3-MIRROR.stl)
- Parking wing o-ring base (x4) (source/TP-JUB-WING-ORING.V3.stl)
- 6x2 Nitrile O-ring (x4)
- M3 Hex Nut (x6)
- M3 x 16mm Screw (x4)
- M3 x 20mm Screw (x2)
Motor base:
- pMulti motor base (x1) (source/GIL-MOT-BAS.V2.1.stl)
- NEMA 17 Short Body Stepper Motor (x1)
- THSL Leadscrew OD8 L80mm (x1)
- NEMA 17 5-8 Shaft Coupler (x1)
- M3 x 10mm Screw (x4)
- M3 Hex Standoff 10mm (x4)
Linear guide:
- 8x136mm Steel Rod (x2)
- pMulti bottom base (x1) (source/PIP-BASE-LOWER.stl)
- M3 x 10mm Screw (x4)
- M3 Hex Nut (x4)
Endstop:
- MakerBot Endstop (x1)
- 1000mm MakerBot Endstop Cable (x1)
- M3 x 10mm Screw (x2)
- M3 Hex Nut (x2)
- MakerBot endstop rod base (x2) (source/ENDSTOP-BASE-MAKERBOT.stl)
Cable management:
- 1m Heavy duty zip-tie (x1)
- 1000mm MakerBot Endstop Cable (x1)
- NEMA 17 Cable 1000mm (x1)
- Cable base (4-wire) (x1) (source/PIP-CABLE-BASE-4W.stl)
- Zip Ties (x2)
- Cable base rod fixture (x1) (source/PIP-CABLE-BASE-ROD-FIXTURE.stl)
- M3 x 16mm Screw (x2)
- M3 Hex Nut (x2)
Carriage:
- pMulti actuator carriage (x1) (source/PIP-SUP-CR.stl)
- LM8UU Linear Bearing (x2)
- THSL Anti-Backlash Nut D8xL2 (x1)
- 50 mm compression spring (x2)
- M3 x 12mm Screw (x2)
Pipette:
- Tip-holder:
  - Multi-tip Acetal Tip-holder (x1) (source/PZ0101-COMBINED-V02.step)
  - 6x2 Nitrile O-ring (x1)
  - Compression Spring (16mm) (x2)
  - pMulti tip-holder stop (x1) (source/PIP-CPL-SHEATH.stl)
  - pMulti spring top base (x1) (source/PIP-SUP-LW.V2.stl)
  - pMulti spring bottom shim (x1) (source/SPRING-WASHER.stl)
  - M3 x 25mm Screw (x4)
  - M3 Hex Nut (x4)
- Plunger:
  - pMulti shaft holder (x1) (source/PIP-SUP-STEM-v1.1.stl)
  - M4 x 10mm Set screw (x2)
  - Dowel pin shaft:
    - D6xL2 cylindrical magnet (x4)
    - 50mm Dowel OD6 pin (x1)
  - Machined shaft:
    - pMulti plunger (x1) (reference/M6-PIN-M4-TAP)
    - M4 x 16mm Conical Head Screw (x1)
Tool parking post:
- Tool post base (x1) (source/TOOL-POST-5-8mm.stl)
- 5x65mm Steel Rod Beveled (x2)
- M4 Hex Nut (x2)
- M4 x 25mm Screw (x2)
- M4 Washer (x2)
Ejector post:
- 2020 V-Slot Aluminum 380mm (x1), M5 tapped on one end.
- M5 x 20mm Screw (x1)
- 2020 Angle Corner Connector (x2)
- M4 Drop-In Nut 2020 (x2)
- M4 x 10mm Screw (x2)
- M4 Washer (x2)
- Tip ejector fork (x1) (source/PIP-TIP-EJECTOR.V1B.stl)
- M5 x 20mm Screw (x1)
- M5 Washer (x2)
- M5 Hex Nut (x1)