When 3D Prints Go Wrong

I’ve printed my share of things using my 3D printers and sometimes they work out and sometimes they don’t.  The toughest ones are the ones that take a long time to print then go wrong in some way.  A while back I was printing the T-Rex Skull from Thingiverse and the part separated from the build plate on hour 11 of a 13 hour print:

 

This T-Rex Skull printed on Prusa i3 MK2, design scaled up 200%, 0.2 mm layer height, 20% infill, clear PLA material.  The print was going well until the snout.  The firmware on the Prusa at the time was an older version, I could hear the extruder scrape across the model after each infill layer but I didn’t give it much thought until it separated from the build place.  Luckily I was home and stopped the print soon after it went wrong.  To resolve the issue, I updated the Prusa firmware and started the print again and issue was resolved:

 

3D print the accompanying T-Rex Jaw and here they are:

 

T-Rex jaw printed on Prusa i3 MK2, design scaled up 200%, 0.2 mm layer height, 20% infill, black PLA material.  Build time ~13 hours.  The material is quite reflective and it has a smooth feel to the touch.  I might add that the lighting looks great in some of these pictures.

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