As an old toolmaker, Welcome to the world of understanding your process! And knowing the limits of that process.
I wonder what he actually expects for a tolerance day to day. A +/-.1mm IS doable if you’re careful. But there is enough randomness in the FDM process, even outside the slicer, that I wouldn’t bet the farm on any 1 random piece hitting that tolerance. Let alone repeating that level of tolerance every time over say, 100 parts.
The software is introducing more than .1mm before it gets the printer in certain situations. No amount of care can fix that. In the video he starts with his calibration cube that has been tuned to perfect (as far as his calipers can measure). But then he printed a complex part (skull because he’s in bio medicince) and its WAY off because the slicer itself messed up the hotend positioning commands.
As an old toolmaker, Welcome to the world of understanding your process! And knowing the limits of that process.
I wonder what he actually expects for a tolerance day to day. A +/-.1mm IS doable if you’re careful. But there is enough randomness in the FDM process, even outside the slicer, that I wouldn’t bet the farm on any 1 random piece hitting that tolerance. Let alone repeating that level of tolerance every time over say, 100 parts.
The software is introducing more than .1mm before it gets the printer in certain situations. No amount of care can fix that. In the video he starts with his calibration cube that has been tuned to perfect (as far as his calipers can measure). But then he printed a complex part (skull because he’s in bio medicince) and its WAY off because the slicer itself messed up the hotend positioning commands.