The file 'Paint Mixer 40mm Diameter For Small Paint Cans 3D Printer Model' is (f3d,stl) file type, size is 813.9KB.
This mixer is designed to fit into a cordless drill and can be used to mix paint in smaller paint cans.
I tested this extensively and it works great, you can nicely control that not too much air is dragged into the paint and the mixing result is fast and homogeneous.
In contrast to other mixers I found on Thingiverse, this one is very robust with the fixed outer ring, so you don't run into the risk of breaking off parts and ruining your paint with debris when you bump into the sidewall of your paint can.
~Update 19.04.2020: Make sure to check out the remix of janreich, the extender looks really good!
You can now also find the Fusion 360 files if you want to scale it and a V2 with more rounded edges at the top.
Farbmixer_40mm_v2.f3d | 268.0KB | |
mixer.stl | 393.3KB | |
paint_mixer_small_cans_V2.stl | 1009.7KB |