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Thread: Show your MODS
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08-11-2014, 09:59 AM #11
I replaced the vinyl tubing with aluminum Z couplers for the reasons you mentioned. Oil was getting down into the tubes and I figured it would eventually cause a problem. Also, the tubes don't really center the threaded rod up very well, so the Z rods wobble when printing.
The coupler is designed to allow the shaft to flex as it rotates, but it also essentially suspends the weight of the X assembly on an aluminum spring, and it rings as the Z axis turns. They're really designed to be used with ball screws that have thrust bearings in the mounts. I went ahead and slid the threaded rods all the way down so they actually contact the motor shaft, and this stopped the ringing noises.
I'm not worried about a crash, because the nuts will ultimately pop out of the traps, limiting the downward force that can be applied.
Please explain to me how to...
05-17-2024, 12:15 PM in 3D Printer Parts, Filament & Materials