Recently i've been getting into airbrushing my 3d printed models and shaking the paint bottle gets anoyying after awhile.. so i thought why not make one and save some energy shaking it by hand..

I present to you the model paint shaker.. i made it mobile so we its not stuck on one location and can be moved around the table..

Difficulty level:

3D printing - Easy
Assembly - Easy
Wiring - Easy
Painting - Dont have too if you dont want too

So let's get started..

Supplies

Lithium battery 18650 3.7v x 2
Lithium battery 18650 2 cell holder
Lithium Battery Capacity Indicator Module
BMS Li-ion 2S Protection Board 8.4V
DC 8.4V 1A Charger
DC female terminal adapter
Wires - AWG18
Rocker switch 2pins - 15x10mm
M3 screw - 16mm
M3 brass threaded inserts
Soldering iron (to connect the LED & PCB to the wires)
Silicone glue & glue gun
12v N20 gear motor - 100RPM
Rubberband

Step 1: 3d Printing

I designed the whole thing using Tinkercad.. feel free to modify and add your own electronics..

https://www.tinkercad.com/things/byYic2xziTi

As always all my 3d printing files can be found here:

myminifactory
thingerverse
cult3d

all 3d printed parts fits on a 200x200mm 3d printer.

Step 2: Wiring

Wiring is quite easy.. just follow my diagram on the wiring and you should be good..
Since the paint shaker is mobile.. i added capacity indicator so you'll know when it rans out of juice.
I glued the BMS board to the side of the battery holder so i can easily wire and solder all the connections
Just a pre-causion dont charge and use the shaker at the same time.. it might damage the batteries and short circuit the BMS

Step 3: Assembly

Conenct the geared motor parallel with the capacity indicator module using a terminal block.
Im using N20 100RPM geared motor so at 7.6v-8v you'll get about 60-70RPM out of the motor.
Wire the +ve wire to the rocker switch before going into the terminal block
Im currently using DC female terminal adapter since my 8v charger uses the same adapter.
Install the wheel on the motor.. you'll need a m3 10mm screw and nut to tighten the wheel to the motor.. the screw should be facing the flat surface on the motor arm
Next inserted the brass m3 inserts into the holes on the base and the hands
Now install all the hands
The model bottle holder needs a rubberband so we can adjust the size of bottle and have a tight hold on it

Step 4: Conclusion

This was a fast project since i wanted to use it with my airbrushing.. it did make shaking and mixing the paints easier but it is so loud.. and if you dont clamp it down to the table.. it will jump on the table due to the momentum of the shaking..