UM3 Wrong size prints

[servant74 1]

I have access to another UM printer.  The UM2 prints the size expected, mine prints differently on the x and y axis (my UM3 prints slightly larger on each, but different percent on each axis.  Z seems OK).

I will get exact measurements tomorrow, but 

 

Has anyone seen this before?

 

Any suggestions on correcting?

 

I first noticed this when printing parts for another 3d printer that needs the parts to run.

 

Any assistance or advice is apprecited.

[Smithy 1,141]

You mean the difference between an UM2 and UM3?

 

Thats "normal" when you print with default settings. Use the engineering profile for the UM3 and you will get better dimensional accuracy. The reason is, that the print head is heavier in the UM3 and therefore you need some different speed settings.