I suppose rather than reinvent the wheel or print objects, it might make more sense to use a calibration object. In my case, I used the CaliLantern, and IIRC, I used Sunlu transparent PETG to do the print. I’m quite sure I didn’t use shrinkage compensation in the slicer, because at that point in time I wouldn’t not have been aware that such a feature existed. Unfortunately, it doesn’t seem as though Sunlu has datasheets for its filament, so if I were to do it over again, I would try to print with a filament that has a good datasheet to go along with it. Which filament maker has the best, most accurate datasheets for their filaments? Anyway, drawing upon generic shrinkage data from google:
and comparing to my results:
It looks as though 1. my x and y error were very close to the same, and 2. much if not the entirety of the error may have resulted from the PETG shrinkage. I most likely used the generic profile, because this was before orca slicer and at the time I didn’t know enough to really do much of anything in terms of tweaking my printer settings. The machine would have been about 7 or 8 months old at the time and hadn’t been used much, so it was in good condition.
I don’t think that the Calilantern specifically addresses the issue of wrong sized holes though. I guess that’s a limitation. Is it really a separate thing? If so, maybe I could suggest to the author that he add something for measuring errors in hole diameters.
The Calilantern is a pay-to-use print, but I read somewhere that someone published an equivalent, free version that gets you the same kind of measurements. It’s a very tedious set of measurements, and not something I would want to do very often. IIRC, the Califlower is a lot fewer measurements, and maybe it’s good enough for the concerns raised here.
Edit: Here’s a link to the free Califlower alternative:
https://www.printables.com/model/164261-calibration-bro-califlower-calilantern-calibration
Here’s the original. $6 doesn’t seem much to pay if it generates good data that can be directly compared to what others are getting.
https://www.printables.com/model/682023-califlower-calibration-stl-calculator
I think the author may have updated the Califlower since I last saw it, since it now looks different than what was in his original youtube video.
Good luck!