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Print Larger (22%) than STL Model with Scale set to 1.00

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Just got a new computer, added Cura, Updated the firm ware. Created a model printed the model, and noticed that it was around 1.2375% larger than the STL. In cura it is stating the correct major OD which is 80mm but it is printing much larger.

I have not added any scaling.

Currently running the newest Cura with the newest firmware.

This also occurred with the newer cura and the older firmware. (I updated the firmware since I thought this may fix said problem). STL created with Solidworks 2015.

The next could be something with the STL, but as in cura it is stating the correct size so I am unsure what could have all of a sudden started causing this problem.

It maybe something simple, instead of me playing around for a few hours I will ask here in the hopes someone else had something similar.

Any ideas??


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I ended up doing just that right after I wrote the post. I wasn't able to do a test print until today but the print was a success!



Something could be wrong with the firmware settings (which are not reset on a new firmware install). Specificly the X/Y steps per mm.


You could try a "reset to factory defaults" on your UM2. To see if that solves the issue.


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