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Inaccuracy when printing

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I'm printing a fairly long length item which uses supports only (I tried a brim too but that made no difference).

I have designed the shape in Fusion360 and it is drawn like this:


but when I print it I get this


It's printed flat with the posts pointing upwards and the support structure between the ledge and the glass.


It seems worse at each end. The middle of the item isn't too bad. Could it be a calibration issue with the Ultimaker?




Edited by Guest

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Could it be a calibration issue with the Ultimaker?


I doubt it. It's more likely related to the material (which one is it?).

Looking at your model - i assume that the material shrinks at different rates. Those geometries are hard to print (at least in this orientation). If possible, add some reinforcements on the sides and/or below the ledge, or try thicker walls. This may help a bit.

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