I give up … trying to print the parts for my MPCNC.
I found it damn impossible to square the gantry, so I ended up with reprinting all the gantry parts. Having adjusted the printer and gotten comfortable with some nice PET-G, I figured a more precise print would make difference.
It did not. It’s 1 degree out of square - and I assume that this is too much to break in. I roughed out the bolt holes, I’ve tightened and loosened all I can, I I’ve tried all sugguestion I’ve come across here.
I’ve also had issued with the rollers. The tube opening seems to narrow! I don’t understand how that can be. The feet are somehow fitting well enough, even though there’s a slight gap between the parts. I also broke some of the feet bolt holes snugging it too hard.
Well - all these issues combined - have taken quite a toll on my patience and motavation! I thought that my printer was square enough - but I’ve realized that a veeery sliiiiightly skewed axis results in a huge out of square-ness when it’s enlarged in the MPCNC. Especially the gantry, since the construction “doubles” the skewedness when combining the x and y axis. I tried rotating one print of the xy burly 180 degrees, so that a potential skewing would be countered. But it didn’t help.
Sooo - to conclude: I don’t want to give up on this thing - even though it sometimes keep me awake in the night. I really like the project and this great community. I’m not blaming Ryan for anything, I only blame myself and the lousy cheap second hand printer I got.
My solution to this predicament is that I’ll get the parts, either from Germany (licensed) or from Ryan… so that’ll be the third time ordering items for my MPCNC! (nr 1 lesson learned: don’t buy stuff from China without knowing what you do, and don’t take lightly on printing precise parts…)
A small questi0n for Ryan at the end of this rant: I’ve seen on Instagram that you are tinkering on a new version for the z carriage. Can you give us a hint on when this may be ready? I don’t want to order the parts if a new revision is around the corner.