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trcharlie

UMO+ Problem with circles

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Hello!

I have an UMO+ and since a few weeks I have troubles printing circles. I tried everything, from recalibrating to switching axles and bearings.

Today I changed the bearings but there was no change in print quality.

I tried printing this one as a test: https://www.thingiverse.com/thing:11895

Here is what the result looks like:IMG_20171009_161449.thumb.jpg.b3f294916bcc6e1f70d163e888057dea.jpg

Do you have any suggestions?

Regards, charlie

IMG_20171009_161449.thumb.jpg.b3f294916bcc6e1f70d163e888057dea.jpg

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Yes, the print is terrible.

But I did just a quick reassembly with the new bearings to see if this got the trick done.

I should mention that the printer is a second-hand one so I can't say for sure if the parts are all original.

My last guess would be that the pulleys are wrong but I'd like to have a more educated guess from you guys.

I did print with standard cura (v.2.3.1) settings, normal quality pla. Other parts came out nicer in the past until the day I discovered the unround circles. Should I try new pulleys? Where can I get some reasonable priced within europe?

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