Waiting for fix

I realized that this work is heavily influenced by my previous machine and can't be printed normally by most popular printers after I have an Ender-3 V2. I will fix the models if I could have some spare time.

This micropipette is designed for serious measuring, and fits universal 1 ml pipette tips. You could read the scale on the syringe, or use pure water and a microbalance for farther adjustment. It has an original designed eject button.

Chinese manual

Demonstration

https://youtu.be/qquyA_rF-24

Components

To assemble this, you need following components apart from the printed parts:

1. a 3 ml plastic syringe with luer taper(screw locker)
2. a rubber band, Φ=16 mm or about, size #8 or #9 will work.
3. a silicone or rubber tube, outside 6 mm × inside 4 mm × 5 mm

Assembling

To assemble this, you still need something could drill holes at the plastic syringe, and some normal white glue. As the figs:

1. Assemble the gears. The groove of the bottom part should be screwed to horizontal.
2. Install the rubber band. It will exactly fits the groove.
3. Take the syringe plunger off and drill 4 holes at the handle. Fix it to the previous parts at the rubber band.
4. Fix the previous parts with the outer case, then install the syringe tube.
5. Assemble the last 2 parts and the silicone tube, then searing the lure taper with some white glue. Assemble the last parts into the lure taper to complete the pipette.

Printing tips

1. Designed for no support printing.
2. There are many threaded parts in this design, please make sure your machine could deal with threads easily.
3. The part 9 and part 10 may needs different size compensation in your slicer software than others, for fit to standard products preciously.
4. You may want to print the part 9 first and check if it fits pipette tips perfectly.

Another

1. For the tested product, all white parts are printed with PLA, and red parts are printed with PETG.
2. I'm going to make a module for 200 μl tips with a 1 ml syringe, later.
3. This design have considered to use a spring as the elastic source; I have yet to get a spring to test, though.