Wobbless X Mounts for MakerGear Prusa
Description
youtu.be/XAVHZ00X4DM
Instructions
The part I printed got a little bit fragile, I have to do some improvements but works great!
youtu.be/XAVHZ00X4DM
If you are having difficulties on slicing it try yo rotate the part.
I also have to check out if the "ABS spring" won't break due to fatigue after a lot of prints.
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The problem you're trying to solve is because you're over-binding your threaded rods. Those bearings at the bottom of the machine are BAD BAD BAD. Take them out, and replace your rod couplers with the good aluminum ones. This allows the threaded rod to move in the X/Y as opposed to moving your carriage instead. You _want_ the Z threaded rods to be loose so that the smooth rod can take over.
Actually the bottom bearings are not bad, if you can get straight rod and center the upper coupling - it offloads weight of the X assembly from the stepper bearings, which are not actually suited for the task.
Thantik thanks for the tips!I've been convinced to solve the problem on its cause.You are right about bottom bearings, I 'll remove it.
I do have aluminum couplers. In the video I was testing one side with with tubes, and it seems tube did a better job. The aluminum coupler have one issue that is: Screwing over threads, that won't allow a good alignment.
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even if your rods are perfectly aligned, they could still be bent slightly. by using the springs in the way they are printed, they let the smooth rods make the axis move in only one direction, by only accepting one axis of motion from the leadscrews. i plan to use a design similar to this in my printer.
Nice DFarms. I've been using it for months, it is still working well.
If you are going to re-design it, an important improvement would be place the nuts "tap" in the lower part and re-enforce corners.