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Cura 3 and UM3 - problem with large model. Does not fit.

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Hi there.

It seems that Cura 3 (and prevous versions) can't handle larger models with UM3. It simply does not fit.

I have disabled one of the extruders, changed brim/skirt/raft to none and so on.

Problem is that Cura can't place and slice a model of size 200x200x10 (x,y,z).

It works if I change the size of the model to 185x185x10.

It did not work with 195x195x10.

I have tried other versions of Cura and tried other computers with fresh Cura installations, same problem. Stl file is flawless, it is just a slab, nothing more than that.

The specification for the UM3 says:

Left or right nozzle:

215 x 215 x 200 mm

(8.5 x 8.5 x 7.9 inches)

Dual extrusion:

197 x 215 x 200 mm

(7.8 x 8.5 x 7.9 inches)

What is going on here? I really need to be able to print larger models.







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The listed print area is the physical dimension of the buildplate itself.

As you can see, there are greyed out areas. this accounts for one or two nozzles, areas where the priming blob would go, areas where the brim, skirt and support areas extend out and the priming tower if you are using it.

Think of it as a TV. It is only 45" if measured diagonally and even then it is really only 44.25".

Honestly, I do believe to start trying to state otherwise would wind up with a massive list of variable printing scenarios trying to take everything into account to give maximum printing areas.

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