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I'm printing parts for a Rostock Delta printer and I've had to stop and admire how well these parts are designed. Boolean nut recesses so there's no need for nuts. Notice the tear drop hole for the Nema17 motor shaft so that if printed like this, there's no need for support. Instead of holes for attaching the motor there are 45 degree angled slots, once again negating the need for support, and accomodating variations in hole patterns. So well done!

@DistroJunkie It is great that 3D printers can be fabricated using 3D printed parts (it is the basis of the RepRap project).

Unfortunately, they do not seem to last. I have reprinted parts for my Mendel90 a couple of times in its 5 year life so far.

Even the cheap Chinese 3D printers are moving to all-metal construction from their earlier acrylics. Comparing with my Anycubic i3 Mega I think the latter will have fewer mechanical issues.

@neildarlow I agree. If I had only one printer, that would be an issue. If that were the case, the first thing I would print would be a full contingent of spare parts to put on the shelf for that fateful day.

@DistroJunkie It was ABS and the parts which were put under (even a little) mechanical stress eventually cracked and fractured. Now, I would print those parts in PET-G and benefit from its slightly flexible characteristic. I am sure it would not be a problem with that material.

@neildarlow Yes, I would prefer ABS over PLA and PETG over ABS. Nylon above all.

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