Tevo Tarantula Circuit Board Scribe V2

See V1 for video on the use of this attachment:
https://www.thingiverse.com/thing:2882238

V2 is stronger, thinner, lighter etc…

This version sits closer to the mounting screws for less leverage on the X carriage.
The last version used V-groove bearings which were not ideal, too much play. My brother turned me on to the fact that linear bearings are available in smaller sizes, allowing this much tighter design.
The dual LM3UU bearings specified in this version provide much closer toleran