Quote Originally Posted by wirlybird View Post
Ok, did you set the filament size in the slicer? Forgot to ask what slicer. I would cut the overall speed in half and see how it goes. Also make sure the measured filament size is in the slicer.
I did have the filament size set in Simplify3D. I've printed this design, even the same file on the SD card, with success multiple times using a few different makes of PLA.


Setting the speed down to 20 mm/s seems to have solved the problem, I'm successfully 42% of the way into a now 25 hour print (up from 14 hours at 35 mm/s). Thanks for the suggestion!