It is a simple box and lid. How hard can it be...
Well, this brings me to some issues I have with some 3D print designs. Of course, these are FREE and so I do not really have any justification for complaining - do I?
The problem is people will put designs on public forums like thingiverse which are clearly not designed to be printed. Some are just designed in a way that could not be printed at all, and some are just sloppy.
Sadly there are some really nice designs which you would struggle to print on most 3D printers, but can be printed by professional services, like this one. I'd love to print this, and it is a nice design (not sloppy, just the way it is).
However, getting back to the simple box and lid...
This particular design has one immediately obvious flaw - the box is upside down for printing. To print on most 3D printers this would have horrid overhangs or need supports. Simply having the box the other way up would work perfectly with no issues. The lid, however, is the right way up to print. Both are in one file, rather than two separate files, just to make things harder...
Basically, most 3D printers will print one layer on top of another. At a pinch you can create a "top" to something, spanning from one side to the other in mid air, but ideally you want designs that avoid printing in thin air, overhands, and anything shallower than 30 degrees (and even that is not ideal, better is 45 degrees). One of the challenges of 3D design is making something that can be printed on typical 3D printer. The box and lid in this case are both fine (mostly) for additive printing, if the box is flipped over.
Fortunately I can separate the two parts and print separately. I tried printing the lid. It took me three attempts to work out why it was not printing - it is about 0.42mm off the Z axis. WTF?
Yes, this meant that the printer was trying to print the whole thing in thin air, just above the print bed, and hence it simply did not work.
It is easy to fix, I can click one button and bring the lid down to the print bed, and if it had been way off in the air I would have spotted the issue and done so, but so close to the print bed, but not actually on it, is almost designed to be a nuisance. Why would anyone do that?!?!
OK, so the box... You would not believe this...
Yep, it is 1 degree off level. What kind of sick mind publishes a design that is 0.42mm off the bed and has one part upside down and 1 degree off level? I ask you!
Yes, I can correct, but this is almost designed to confuse and annoy.
Once again, I repeat, this is a FREE design, I have paid nothing for this. Can I really complain? I am not picking on this one design, there are a mixture on thingiverse, and other forums, with a lot of designs "just working" and a few that are "sloppy".
One of the other issues is something may be designed for one printer and material, and just work on that, but need some adjustment for other printers. That is not uncommon as the tolerances and capabilities of printers vary slightly. Obviously it helps when people specify the cases they have tested.
I have to wonder, in the case of this box and lid, if this is deliberate trolling, or just sloppy, though it is hard to see how one can accidentally rotate something by 1 degree.
I wonder if I'll print it and find the lid does not actually fit on the box :-)
P.S. it fits
P.S. it fits