Extreme 80° "Atom 3D" overhang, printed on a Prusa Mk3
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Yes, it can be printed on a Prusa Mk3.
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Yes, it can be printed on a Prusa Mk3.
The folks at Layer One created this model as a marketing stunt for their Atom 3D printer, to show off the qualities of their model cooling solution. A 80° overhang is considered unprintable by many.
They published the model on Thingiverse https://www.thingiverse.com/thing:699366 and even made a Youtube video: https://www.youtube.com/watch?v=KbHaKYRBMyw
This is the same model, sliced for a Prusa i3 Mk3 (or Mk3S) and successfully printed on it.
Print instructions
The gcode is sliced for TreeD WTL PLA, at 200 °C, but any PLA will likely do. I printed with a E3D Nozzle X 0.4mm, but the standard brass 0.4mm nozzle will likely work, too. The gcode will print in about 2 hours.
A cold ambient environment will yield better results. This print requires strong bed adhesion, so make sure your PEI sheet is spotless or the object will pop off during late stages of print.
The 3MF project will print in 2.5 hours using the standard "Prusa PLA" profile. To get down to the 2 hour print time, disable slowing down in Filament settings.
You'll see that the 3MF project uses a lot of tricks to achieve the best quality of the print. If you can improve on it, let me know,