Add BTU mod top piece v3

- This is the first full version of the BTU mod I created.
  - v1 and v2 were just test pieces that mounted to the front screw
    holes of the trackball to check clearances. They weren't really a
    usable top as they didn't have anything other than the ball well.
- This part has been test printed on an Ender 3 and works well.
This commit is contained in:
George Bryant 2021-01-30 13:50:05 +00:00
parent bf0d56223a
commit f18354d398
2 changed files with 136526 additions and 0 deletions

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