Hi all,
I am printing on a Ultimaker 2. bought appr. in 2014. This is not my first Printer. But to be honest I never build one. I bought them assembled so I am not SO much into it.
I am printing since quite a long time. This off chause does not mean I may just make a stupid mistake. As I have no Idea and as I could not find a topic wich solves my problem I dare to post this as a new topic.
I am printing allot of round stuff. I have printed parts with thread, bottels and all kind of stuff. Also very fine threads with pitch of less then 1mm w/o problem. Allway with perfect roundness and very good accuracy.
Since a few month all my prints are not round anymore. They are more like a oval. Squared objects are not correct in XY measures.
I calculated a little bit and it seems like all my prints are perfect in X axis. A 80mm round object stays perfectly 80.0mm in X axis.
While the Y Axis measures appr 1% less. So a 80mm round circle measure in Y direction only 79,2mm.
Wich results in a oval shape.
I checked the belts and they are not loose. I did not use a beld spanner so fare as they realy did not seem to be lose. At least there is no noticable difference in Y and X . Also the motor belts are stiff have strong tention.
As I have a Ultimaker 2 I tend to think that there should be no movement in the housing, so that I should not need to check angels of the housing.. I hope...
Does anybody has a Idea what may chause this?
One thing wich "may" be related to this is, that every movement in Y the printer ratles. Like if something is scratching somewhere. I am oiling my rails every few weeks so this should not be the reason.
I am very happy to hear your thoughts.
Thank you so much!
Johannes