MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
Smooth rod could be 25cms instead of 30 cms, which allows to cut 4 rods in one 100cm bar
25 cms should make the whole thing a bit more stable/robus.
Springs are about 3 to 4 cms high (could probably go up to 5cm).
Strongly recommend to fix it to a board or bench.