A PEI-coated flexible steel build plate makes a big difference to productivity. The build stack has also been completely redesigned. To further enclose the build chamber the S7 only has one magnetically latched door. ![]() This filters the exhaust air of every print and also improves build temperature stability. ![]() It now includes an integrated Air Manager. The UltiMaker S7 is built on the success of the UltiMaker S5 and its design decisions were heavily based on feedback from customers. Maybe this is one of the contributing reasons for so many people having first-layer problems - software that has no way to properly compute a first-layer flow rate, because the programmers never gave anyone an input box to tell it what the Z offset is. Is there some sensible reason for this support being missing, or did the devs just never think about this properly in the first place? It seems really bizarre to me - it's so incredibly obvious, and Cura is not the only slicer that skips right over this critical bit of information. The math to calculate exactly how much filament to extrude is going to get the answer 100% correct for EVERY layer (first included, no random kludges necessary) if Cura simply had some way for us to tell it what our Z Offset actually is. There are some ghastly kludges to try and overcome this mistake (like setting a first layer extra flow rate) - but this all seems really puzzling and bizarre to me. That's a REALLY important number, because Cura will never output Z0 (if you set a layer height of 0.2mm, Cura's first layer will be Z0.2 - which, combined with the fact that my nozzle (and *Everyone else's*) does not touch the build platform at Z0, means that Cura is printing a 0.4mm high first layer, and wrongly thinking that it's 0.2mm high. Which let the user define the distance between the build plate and the nozzle (in my example above, it's 0.2mm)
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