The limiting factor in all these technologies is more the imagination and skill of the user, and less the technologies themselves. Sure, capabilities grow with time, but incredible things are made every day, with very basic tools.
But I think, vintage computer owners (and reporters, and investors) are spoiled by the revolutionary successes in personal and embedded computing, and carried (past tense) those feelings over to 3D printers and their development and use. This was my essential gripe in the previous discussion. Now, we have dispensed with this issue. People are talking about here-and-now use to make vintage computing parts; reasonable expectations, actual results. Dave McGuire did not post about "incredible things" made, but in fact CREDIBLE things - like that finger splint. He could have used popsickle sticks and string; but his local printer + thingiverse design = useful widget. (shrug) 3D printers may simply become like waffle irons and pancake mix: something you do when needed and ignored soon after. Of course they could do more; like icecream cones. ;)
You can do quite a bit, and in very high quality, if you take the time to properly learn to design parts.
First - 3D printers are pretty sophisticated tools. Better tools do a better job for ANY user. Beginners need a BETTER tool than those with experience. And now, there's better printers on the market (among others), and better resources. In any event, printing toggles is not a big stretch of available technology.
curate a library of 3D printable parts that are directly related to vintage computer systems.
Second - get the plans from someone who has that better experience, better tools. This is what they do in the home-machinist magazines today; they did it in the Pop Science, Pop Mechanics, Pop 'tronics magazines years ago. It was done a century ago in those magazines. 'Fer instance: http://www.retrotechnology.com/restore/boy_mechanic.html
The most notable item is the eject gear for the Apple 3.5" disk drive that has finally been (dare I say it) "perfected."
I know about those eject-mechs, I've sold some as replacements. I see how those gears fail. And I was skeptical about printed gears. This is a real case-in-point and I'm glad Tony Bogan brought it up. Some vintage Macs are close to 40 years old and their plastics are FAILING - repeat, failing. These are real vintage-computing issues. Oh - it's good design to make a part KNOWN TO FAIL. Example - a fuse. Then you can stock and replace only one part, and fix the underlying cause. So I need those gears, and some of those toggles too, and other parts. Some I may have to design, they are uncommon. I'll read this thread with interest and I hope for some collective efforts from it. Even a list of success stories and good printers and CAD tools works for me. Thanks! Herb Johnson plastics are the future -- Herbert R. Johnson, New Jersey in the USA http://www.retrotechnology.com OR .net