This might not be appropriate for FDM, but I think it could be worth tossing out here: Wire Wrap tooling.
Challenges: Small hole/pseudo accurate positions.
Benefits: Not making the little guy try to make small holes with accurate positions!!!
Long story short, when building igniters, you use tiny wire and wrap it around small wires. If you are like me, you bleed about 20 times when making 10.
The real-world wire wrapping techniques (i.e. not thumbnail and squeeze) use a tool that is very smart, easy and not cheap. Additionally, they are made for specific wire sizes we are not interested in and don't work well if the wire diameters are wrong.
After reviewing manual wire wrap tools and electric tools, I made a version that was more functional than my thumbnail and cheap if you can solder, have a Dremel tool and are willing to scrap $5 worth of material while figuring out how to do it. The joints were fairly mechanically sound compared to the thumbnail and squeeze method. Still not a MIL-spec wire wrap, but way closer. . .and no blood.
If 3d printing with FDM can make tiny holes (0.010"-0.020"-ish), this could be a useful tool for people trying to wire wrap odd sizes like we need to do.
I'd be more than happy to discuss and have thought about doing a tutorial for what I made, but I have a lot of tools that many people don't have access to and a tutorial is pointless if nobody has the right tools, IMO. But, if you could make the hard part with 3D printing, then building the tool would be easy.
Sandy.