A couple months ago, one of the other players in the D&D campaign we play in ordered a custom 3D-printed miniature for his character. The campaign has been going for a while and is a lot of fun (and not super-lethal), and this seemed like a cool idea. So I designed and ordered a mini for my character too.
Hero Forge has tools that support a huge range of character races, equipment, poses, and lots more. My character is a monk and one of their standard poses has a kick, so I started with that. I was tickled to discover that, among the many hand-held objects in their catalogue, they have a staff with a flower on one end -- perfect for my sylvan character who does in fact have a Staff of Flowers. She uses a mix of the staff and unarmed strikes in combat, so I put the staff in one hand so the other hand can punch. I ended up with this:

The mini came a few weeks ago and looked great. Alas, at the first game, the top of that staff broke off. Another player attempted a repair, which turned out to be hard.
I wrote to Hero Forge. I said I was new to 3D printing and described what happened. I said I wasn't asking for a remake; the figure had arrived intact and this was obviously my design error. My question was: for the future, do they have or would they consider adding tools that help with evaluating a design for weak spots? Had I realized how risky the staff was, I might have omitted it. (One of the players looked at the break and said something like "yeah, given how they had to have printed this, that doesn't surprise me" -- but I've never done anything with 3D printing before so I didn't have those instincts.)
They wrote back and said this was not the experience they wanted their customers to have, they would remake the figure for me, and before they do, would I like to adjust anything? This blew me away -- I wouldn't have been too surprised if they'd offered a remake at a reduced price or charged me shipping or something, but nope -- they offered me a complete do-over at no charge. I adjusted the position of the staff to give it anchor points at both ends:

The lower petal and both curves of the staff now touch the hair, and the bottom is still anchored at the base of the figure. I had to do a lot of experimenting with shoulder, elbow, and wrist angles and bends to get there, but it worked.
(In case you're wondering: I changed the flower color so that, at scale, it would look less like part of the clothing now that it was close to "hat" position.)
The replacement came today and it looks great! I will happily order from them the next time I need a custom mini.