edit-mesh

not in that case- any modifications on MY UMO belong to MY business :-)

stefan, thank you very much!!! i just started reading http://umforum.ultimaker.com/index.php?/topic/1611-fixing-pulley-innacuracy/?hl=pulleys and i am scared ;-)... pulley wobbling and endcap friction things... seems there are a lot more things to improve/check, i am not sure if i really want to do that.. but now i will keep an eye on it :-) - THANKS!

i tried moving the printhead, to look for any resistance and asked my friend if he could find any irregualities... we couldn't say the printhead was moving ABSOLUTELY smooth and SUPER easy (though you can move it with the little finger) but there were very very little differences in the force one has to apply... but i don't know how to remove or minimize it and its really not that bad i printed (first 10 layers) of the "U" with a 2x longer vertical left wall with 15-20 mm/s : left V Wall = 2.2 mm; right V Wall=2.1mm printed (first 10 layers) the original "U" with the same settings, rotated 90 degrees, left V wall = 2.3mm; right V wall=1.9mm printed (first 10 layers) the original "U" with the same settings as usual, with the open side upwards, left V wall = 2.4mm; right V wall=1.9mm ... if it's an accelaration problem, why is it always more significant in the left long wall, no matter which axis and no matter in which (chronological) printing order??? i already put the machines accelvalue down to 1000 with no effect, and don't know what i could do in addition?

hi ultiarjan sure https://www.dropbox.com/sh/bf3ikcy4fk3ici1/AAC-eFGorlHFzmRrXOzDGGCIa?dl=0 there is a looooong topic i wrote in the questions and answers section, but i tried to write my findings in this topic above, so it should be not necessary to read the long thread. in the layerview of cura everything looks ok (for me). i tried fooling cura by changing the nozzlesize to 0.8., to be able to print with one shell http://umforum.ultimaker.com/index.php?/topic/7488-trick-cura-to-change-print-path/

i am struggling since a few days now and really need help or some more input with this i am sorry. printing this modell, no matter how i rotate it, or which settings i use, results in two different wall dimensions.the left leg (if you watch it as an "U" with the open side showing upwards ) is (and stays) always thicker than the right leg no matter what i do. if i take the geometry and cut of the shorter walls, it's printing precisely what is told! i think its a problem how cura is slicing the geometry, but i have no idea how to change it. i tried to print with different shell thickness, a nozzlesize of 0.8, and tried slicing with sclic3r (no special settings) with no different results. choosing "external perimeters first" in slic3r only seems to help a little bit, but actually i am not sure why and what i am really doing/changing. can you give me help on that?

thank you very much TinkerGnome for explanation and links! since i have these printing wall problems, which i can't verify in cura, i was curious about the latest versions and a little confused about not finding some release notes. i am not a friend of betatesting in production, but if i use an open source printer i am a part of the betatesting somehow i think...

i would like to share the data, in case anyone has time and patience to help me further on https://www.dropbox.com/sh/bf3ikcy4fk3ici1/AAC-eFGorlHFzmRrXOzDGGCIa?dl=0 i added the cura 14.12.1 gcode which isn't printing here with the same wall thickness from the brim line on (slopewall is thicker due to construction purposes). i would be very happy for any help or replies on my problem. thanks in advance imke

thanks daid! what if i care about the latest development, is there a posibility to benefit from your latest changes and how?

hello i have got some stupid newbie questions (also regarding my current wall thickness problems/posting-any support would be very appreciated)... where can i find the cura release notes (by clicking on the icon "view" in products/software- section, i get to the stories-section) ? and do i have to sign up to daid@github to find out what "fix bug, math.round does not exist" means ? is that a bugfix? where is that integrated ? sorry for the stupid questions!

haven't found something either in cura-, troubleshooting- and questions and answers- section from nov-jan 2013-2014, but fingers crossed, maybe somebody remembers that thread! regarding my wall problem-WOW, great job, thank you for your great support!!! to make sure i understood everything right, your last print on that model was so much better, because of using the 0.8mm wall thickness, cura 14.07 and a slower print speed ? ok, thats what i am going to try tomorrow! printing a normal U with 3 walls, i didn't see any wall issues. thats why i also thought my belts are ok, but maybe i really have to tighten them also, because i noticed that even the 1st brim line, which is printed with 20mm/s by default (?)was showing a thicker wall on the left side... could you notice something like that also? or is it not that relevant how close the brim matches the geometry because of the 1st layer z-offset? all in all thank you very much yellowshark, i still have to try and learn a lot :-) !!!

hello yellowshark thank you so much for your testing and reporting!!! well, the pattern of walldimensions you posted from the 1. test is almost exactly, what i get her all the time. yesterday i sliced in cura 14.12 and rotated/mirrored the model, i also printed with a nozzle size of 0.41, all with no obvious different results- the wrong dimensions stayed at the same place of the object, no matter how i placed the object on the printerbed so i guess this excludes a machines/belt issue at least ?!! but reading your answer 2 times helped, because now i know, i have to open the gcode from cura in repetier-host and not the model - that definitely makes more sense :wink:. i am sorry but not sure if i got you right in the last post: you found these pics, but not the related posting in the forum? well i will do a search for that period...hopefully it wasn't deleted... but right now, i still have no idea what the problem really is and no plan what i could try (what i haven't tried yet) further on to come a little closer to a conclusion or possible workaround ...

thanks for the replies guys! @pm_dude: like i wrote already, layerview in cura looks ok :-/... @yellowshark: i will try RH and see what it looks like- thanks for the hint !!! !!! !!! (may i send you the file as obj also?) and does the exportformat makes a difference in cura- obj or stl ??? i am a 3ds-worker useing the obj export in 3ds max, cause i can export selected objects and don't have to delete something previously- didn't had any issues with that yet. i also read about the 0.4 wall problem (german forum ;-) ) hmm will read it again and see if cheating with a smaller nozzle size might work, although i tried so many wall thickness parameter and it didn't show a different result. and YES i have different dimensions :-(, not measured it, but you can see it quite well (also on my foto i think). what makes me wonder, is that there is absolute no change with different parameters (also tried spiralized and follow surface mode- its even worser then).

to me the short belts seem to be tight , well i am not that familar with short belts though :???: ... they don't look and feel dangeling... curas layerview shows a perfect uniform green gap, no differences between the wallsinfill i just tested a 1.6 mm rectangle which was uniform, deleted it loaded the "U" model, printed with same settings and got that gap again. i checked the given geometry, same wallthickness on both legs, no faulty mesh... this is voodoo :-| ...

hello i'm trying to print a solid "U" which has a thickness of 2mm. in cura 14.11RC7 i set shell thickness to 0.8, 100% infill and i get different wallthickness in my print. i changed the model to a thickness of 1.6mm and printed with 0.8 thickness and no infill again, same result...no matter what i am trying, the left "leg" of the "U" has a gap between the walls. i did a new bed leveling and checked the alignment of the axis/printhead...controlled the belts also, no change what could cause this problem?

phhh... thx alot gr5 !!!

gr5 thx !!! yes of course, here it is (sorry big file) : "spiralize" works perfect for that solid object!!! ------ living in switzerland i've got the approach to reanimate my lost french knowledge somewhen ;-)...so be prepared to read some weird comments in french from me in the future...but to be serious-thank you very much for google translate hint !!!

well, after trying to learn some french and reading what didier klein wrote today , i installed cura 14.11R7. and what can i say?! the thicker spiral layers are gone !!! is it a bugfix? anyway i am happy, but still have the clicking sound from the z-motor... please tell me anyone if this is normal sound while spirilizing, or that i don't have to worry about that. thank you very much in advance! cheers imke

Hello i am a new ultimaker user ! After the heated bed installation i noticed some z-motor clicking and i also get some thicker layers with the spiralize function of cura (14.09) every ~10 mm. https://dl.dropboxusercontent.com/u/29640097/20141119_083708.mp4 the z axis runs "almost" smoothly ( well, pulling the heated bed up from the bottom while steppers are disabled needs more force, but i can push it slightly downwards with no problems). can you give me an advice what to check and how ? z- motor overheating? is there an easy way to calibrate the z- rod once again?