Here are some pics from the 6 axis model I'm currently working on.

https://www.instagram.com/p/BaPQChtgkqp/?taken-by=imakerobots

https://www.instagram.com/p/BaK56pIg09m/?taken-by=imakerobots

https://www.instagram.com/p/BZuFjqrAWwr/?taken-by=imakerobots

As I print and assemble each part I check it against the model.  More efficient than building an entire model in a vacuum and finding I made mistakes.  Maybe it couldn't be done without an existing, purely-vacuum model as a reference.  Hard to say from the other side!

The design files for this version are on Patreon. https://www.patreon.com/imakerobots

You can wait until it's for sale or chip in a little now, get the files early, and support development.  Your call.