I would have thought that the PLA would have just worked out all of the black ABS out of the way already, but it’s still got the occasional black streak. Again, I don’t mind – I kinda like it. However, I would like to be able to build some pieces out of pure PLA. No matter, I’ll keep printing stripey non-cosmetic parts. 
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Not really a problem after all. I’m printing up a (well, another) teapot right now. Having just run the PLA through rather than trying to actually remove the ABS the teapot has these black streaks throughout. I kinda like it.
Crystaline teapot
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I figured, what the hell – I built it and I can (probably) repair it, right?
So, I backed out the black ABS I have been printing in, jammed in some freaking sweet PLA, ramped up the heat on the extruder to the exact settings I use for ABS, and then FIRE THE MAKERBOT!
For comparison’s sake I used the same exact settings, same exact Gcode file from the last single walled test piece.
What did it look like, pray tell?
I thought you’d never ask.
PLA printing success!
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