It happens with every 3D printer build group … people can’t leave good enough alone.
And well they shouldn’t! Open hardware is all about tweaking, improving, ratcheting up.
In the first group some moved to linear bearings, to different extruders and a variety of heated beds. The second group improved on the electronics and Jim even went so far as to make many of his “plastics” out of metal! The third build group has a splinter group making a big change by moving to an acrylic frame and I’m sure more changes will come.
While it makes the build process a bit harder to manage, at it’s core it’s about innovating.
You have to wonder what cool things are coming next …
Many parts traditionally made of plastic are seen here in metal (by Jim).
The Prusa Air frame is cut here from 1/4″ acrylic plexiglass; here it’s still covered with protective paper while being lasered. The etching shows clearly in the picture on the top of this post.