Trying to figure out what’s going wrong. Seem to have a mechanical drag somewhere in my xy motion. Double-checked idlers today, with two washers on top of each idler and the lock nut inverted on the bottom so they should spin freely relative to each other.
If I move just the y-axis 200mm I can see the head jump over 1-3mm in x as it travels. Bringing y back the x jumps back along the way. Tried adding and removing tension on the belts, freeing the idlers as mentioned above, and adjusting the lean on the steppers to try and keep the belts off the top pulley flange (though the mounts are flexing more than I’d like still).
Upped the driver current to 1000mA and tried playing with acceleration, but I’m pretty sure I’m not skipping steps. Also tried a couple different slicers in case I had a parameter wrong somewhere. Photo is a first layer of a test print I’ve been trying, where the segment sides should all be in line and the tabs should be centered on each other. When it jumps it seems to be about 1mm, and jumps back as the head traverses onward-- not a layer shift thing like you’d expect with missed steps.
Anyone else encounter this mechanical hiccup in their builds?