Just found a real sh*t of a design flaw with the ox. I was doing final alignment of my z-axis, and after setting the eccentrics I needed to tighten the wheel screws - but you can’t get at them without disassembling the x-axis carriage.
So, for about the 20th time, I need to disassemble the damned gantry.
There seem to be a lot of people who have successfully built it without this complaint. I haven’t watched them in detail yet myself, but there are detailed build videos available. I’m guessing, but they probably have an order to the build steps to prevent this from happening.
That being said, it does sound like a design pain point if they cannot be easily re-tightened after the build is complete.
You got it.
If you need to adjust the tension on the Z-axis wheels (which you really need to do to actually align the spindle in the first place- a job always best done in situ) you need to loosen the bolts a little to move the eccentrics. That is not possible while the Z-andX-axes are assembled.
A complete PITA.
Maybe I need to ‘budget’ for a strip-down once every now and then to retighten everything?
I had a thought on how to deal with this. If SHCS will fit on the stepper side then you could make the adjusting slot a bit wider. Then make a nut (similar to a flange nut) that will fit in the slot. If the flange nut was elongated and had rounded corners then it wouldn’t chew up the slot.
I’ve been thinking about building an OX myself. How big is yours?
1500 x 2400