04 Jan '18, 4pm

Huge 3D Printer Ditches Lead Screw for Belt Driven Z Axis

Huge 3D Printer Ditches Lead Screw for Belt Driven Z Axis

The vast majority of desktop 3D printers in use today use one or more lead screws for the Z-axis. Sometimes you need to think outside of the box to make an improvement on something. Sometimes you need to go against the grain and do something that others wouldn’t do before you can see what good will come out of it. [Mark Rehorst] had heard the arguments against using a belt drive for the Z-axis on a 3D printer build: The belt can stretch, causing inaccurate layer height. If power fails, gravity will totally ruin your day. He decided to go for it anyway and made a belt driven Z axis for his huge printer . To deal with the power loss issue, he’s using a 30:1 reduction worm gear on the drive — keeping the bed in one place if power goes. And after a few studies, he found the belt stretch was so minimal that it has no effect on layer height. Of course those two issues are but a ...

Full article: https://hackaday.com/2018/01/04/huge-3d-printer-ditches-l...

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