Z axis with 1 stepper motor over belt Hi there! A common problem is that the z-axis with two motors can geht out of sync. My idea is now to do it with one motor that drives the two z-axis lead screws with a belt. What do you think of this? Has anyone tried this? THX! https://reprap.org/forum/read.php?14,281734,281734#msg-281734 Mon, 20 Jul 2026 16:22:57 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?14,281734,301276#msg-301276 Re: Z axis with 1 stepper motor over belt https://reprap.org/forum/read.php?14,281734,301276#msg-301276 the_digital_dentist Mechanics Sun, 26 Jan 2014 09:48:24 -0500 https://reprap.org/forum/read.php?14,281734,285288#msg-285288 Re: Z axis with 1 stepper motor over belt https://reprap.org/forum/read.php?14,281734,285288#msg-285288 Buback Mechanics Fri, 27 Dec 2013 10:30:25 -0500 https://reprap.org/forum/read.php?14,281734,282148#msg-282148 Re: Z axis with 1 stepper motor over belt https://reprap.org/forum/read.php?14,281734,282148#msg-282148
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Traumflug
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However, I think you might also consider a belt driven Z axis.

... and say good bye to any kind of layer thickness precision. Having something solid on the Z axis has a reason: this gear must withstand the acceleration forces of the print head which happen in vertical direction, too.

Simply not true. I use a cable driven z and print at 0.08 a lot. The Ingentis has a belt Z and it prints at 0.1mm with as good or better precision then most lead screw Z axis machines. [plus.google.com] . The printxel has a belt Z axis and has such good layer consistency it lead me to make the cable Z. Up printers uses belt Z axis and inspired Printxel to use a belt z. I personally think it is the only way to go and would never even consider building another machine with a lead screw.]]> Sublime Mechanics Thu, 19 Dec 2013 11:48:06 -0500 https://reprap.org/forum/read.php?14,281734,282125#msg-282125 Re: Z axis with 1 stepper motor over belt https://reprap.org/forum/read.php?14,281734,282125#msg-282125
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bensch
Has anyone tried this?

::o Have you ever looked at the orginal (Sells) Mendel?]]> rhmorrison Mechanics Thu, 19 Dec 2013 10:40:36 -0500 https://reprap.org/forum/read.php?14,281734,282122#msg-282122 Re: Z axis with 1 stepper motor over belt https://reprap.org/forum/read.php?14,281734,282122#msg-282122
I do not know if you understood me correctly
here is a picture - what I think:]]> bensch Mechanics Thu, 19 Dec 2013 10:35:45 -0500 https://reprap.org/forum/read.php?14,281734,282084#msg-282084 Re: Z axis with 1 stepper motor over belt https://reprap.org/forum/read.php?14,281734,282084#msg-282084
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However, I think you might also consider a belt driven Z axis.

... and say good bye to any kind of layer thickness precision. Having something solid on the Z axis has a reason: this gear must withstand the acceleration forces of the print head which happen in vertical direction, too.]]> Traumflug Mechanics Thu, 19 Dec 2013 08:50:13 -0500 https://reprap.org/forum/read.php?14,281734,281885#msg-281885 Re: Z axis with 1 stepper motor over belt https://reprap.org/forum/read.php?14,281734,281885#msg-281885
However, I think you might also consider a belt driven Z axis. The screws cause the famous wobble problem, and speed limitations. The downside to the purely belt drive system is that a way must be devised to keep the Z axis from falling when the power is removed from the steppers. Several interesting ideas are explored in the thread on Variant of Goopyplastic's Tantillus Variant (about halfway into page 2). One machine that implemented one of the ideas there used a worm gear reduction to increase lifting force and prevent the axis from falling.]]> Dale Dunn Mechanics Wed, 18 Dec 2013 21:13:23 -0500 https://reprap.org/forum/read.php?14,281734,281734#msg-281734 Z axis with 1 stepper motor over belt https://reprap.org/forum/read.php?14,281734,281734#msg-281734
A common problem is that the z-axis with two motors can geht out of sync.
My idea is now to do it with one motor that drives the two z-axis lead screws with a belt.

What do you think of this? Has anyone tried this?

THX!]]> bensch Mechanics Wed, 18 Dec 2013 14:15:53 -0500