NBull

How is you Polybox set up/connected? Not saying it's the deal breaker but i would try and print whit out the Polybox. My experienc wit the Polybox is that when i use it with 2.85mm fillement it tends to grip (friction) the filement to much so the feeder has a hard time pulling and pushing the fillement back in the box.

Don't know if my problem is the same, but i found that some spools if they have a lot of "tensions" (not sure if that's the right word) will easily get tangled at the last part of the spools. because it unfolds to much on the spool and fillement starts drooping. I think this is because the spool gets to light, compared to the fillement tension. and my fix was to print a roller for the spool and put some weight on it. It worked for me, after this i don't have problems whit loss fillement. I used a piece of Ø 40mm metal rod with a 3D printed sleeve, so it's quite heavy almost 1kg. maybe a bit over kill, but on the ball bearing roller it has no noticeable resistance. and stands firmly in place.

Hej don't know if you have found a solution for your problem. But I will guess it's because you also need to put in a Filament weight.

Try setting "combing mode" to (not in skin) enable: Avoid printed parts when travling Z hop when retracted Z hop only over printed prat (not sure if this is needed but i have it on)

Hi i need some help/advise on a layer shift problem. I have a new (4-5 month) UMS5 it's not running prints every week so print time on it have ben minimal. and i'm really not happy with the print quality. to me it looks like the x/y ases do shift or are not precise. Sometimes, same print can first come out good and then next time be really bade. so its not consistent. But also showed that it can make the quality. I found a thread on the forum *1 that have a similar problem. So i began to check the belts and axles. The belts look straight and fine. but to be honest I do not quite know what to look for! if i move the head so the black plastic part is at center of the axes i can move the belt down approximately 1cm befor theres resistance. so its more like a base string then a guitar, is that okay? Im not that comfortable, just beginning to screwing on a "new" machine. it should not already be necessary. But is this a normal thing that has to be screwed tighten occasionally, or do i need to send it ind. When inspecting the belts i noticed that mostly all the screws on the left side have ben over torque (the screw have some degree of deformity), it even looks like there's a brokken piece in one of the screws holding the motor. Cura Profile if needed: NBull.curaprofile short description it runs slow *1