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piercet

Openbuilds v-slot z axis for Lulzbot Taz 4/5 Printers

by piercet Sep 27, 2015
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This is really cool - I had been contemplating a rail z-axis slide for some time.

How do you find the z-axis wobble after the switch?

Thanks! glad you like it. Be sure and check out the X and Y axis rails as well. You can find them in my design files.

Interestingly, adding the X Vslot rail mod decreased my wobble over the stock quite a bit. The Y rail mod improved my Z layer consistency, and the Z rail mod removed a bit more of the wobble, but not 100% of it. Compared to a stock Taz, which already doesn't have very much wobble to begin with I would say I have much less wobble. I was able to completely eliminate wobble in the X direction, and minimize it further in the Y direction by adding my Anti wobble Z nut holder design, which you can actually see in a couple of the pictures. I'm working on an improved version that will eliminate the last little bit in the Y axis direction as well, which will be uploaded after I test it. You can actually see that piece sitting on the bed in one of the pictures,

Part of the remaining issue that the Z nut anti wobble coupler resolves, is that even with the Z axis completely locked to the Z rail with zero play in the bearing wheels, the metal end bracket itself still has enough flex that it will allow a 0.1mm wobble, Stiffening the plate itself might eliminate that, but I'm going the route of allowing X and Y sideslip of the leadscrew Nut instead. I'll definitely post the Wobble nut here when it's done, you can see the interim build thread here if you are curious: https://forum.lulzbot.com/viewtopic.php?f=16&t=2476

I believe this is "V-slot" extrusion, not "Openrail". Openrail is a rail system that you can bolt to metric extrusion. V-slot has the tapered grooves integrated into the extrusion channels. Makerslide has a rail edge in the extrusion, which is what my ORD Hadron uses.

I've always seen people refer to it as openbuilds openrail v slot extrusions. Looking at the website that may be in error on my part. Ill fix it. Thanks