Simplify3D User Forum

Hello together,
at our factory, we are using Simplify3D in combination with a German RepRap X400 Pro since a few weeks. After some test prints and calibration, I get realy good prints within less then +-0,1mm.
But there is one problem I wasn't able to solve up to now, also Google wasn't answering my querstion:

The first layer is printed approximatly 0,3-0,4mm wider then the upper layers. So a test cube with 20mm will have around 20,7mm at the bottom. I can't say for shure if its only happening in the first layer, or 2-3 layers. Its a ramp from 20,7mm to 20mm, ramp down ends at last at layer 3 (0,2mm layer height).
My first attemp was to recalibrate the bed, but it was OK and nothing changed. First Layer width is set to 100%.

What could be the problem, which setting may safe the issue? If I print with raft, the parts are OK. But it would be much better if we don't have to remove the raft on every single part..

If the first layer is wider than the rest of the model, it could be that you're introducing too much "squash" - initial nozzle height too low. When the nozzle height is too low, the extruded filament is pressed into the bed more... and therefore wider.

If its happening 2-3 layers later, then I'm not sure what the issue could be.

Thanks, that solved the problem! With 0,05mm offset in z, the 20mm Cube now measures 20,1mm at the lower end. Thats OK I think!