Has anyone tried using Tough PLA (aka TPLA) for their MPCNC parts? Could it be a good material, or is regular PLA the way to go?
There are a number of PLA formulations that report to be tougher or stronger. Often I see them marketed as PLA+ or PLA Plus. The Matter Hacker’s Tough PLA seems to be in the same boat. In general they get their toughness from yielding more before breaking. They can take an impact better than plain PLA, but they are not as stiff. Unfortunately for the MPCNC stiffness is important, so I think you would be sacrificing stiffness for a property that doesn’t really add value to an MPCNC. On the other hand, I’d guess this material would be better than PETG for the MPCNC. Unlike a lot of “exotic” filaments, there are datasheets that someone with more technical knowledge that I have might be able to give you a more definitive answer. The two sheets were too different for me to make any assessment.
My build that I know you have seen is the PLA+. The previous two iterations of the MPCNC I also used the same and didn’t have issues with the filament. I did all the calibration stuff for my printer using the same filament and it has been good so far.