This printer is designed to cost less than 120$ without giving up on quality.

The build volume is 235*205*195 mm^3.

UPDATE:

Initially, I planned on using 28byj-48 steppers for Z-axis, to save a bit, thinking I will accept their slowness … but no! It was almost paint full to watch so I upgraded for nema 17!

2 More CAD pictures:

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A small video of the machine at work:

Ultra low-cost 3D printer from victor jung on Vimeo.