This is an old revision of the document!
Aka, “Son of Junior”
The intention is to build much bigger CNC router than we currently have.
Effective table area of approximately 48“x48” (probably a little less due to spindle width, etc.), Z-axis travel of about 5-6“?
Current Status: Some parts have been built, courtesy of Steve Gray. Parts should arrive at the space at the end of December 2018. Assembly to occur beginning in early 2019.
X-axis: 1/2” supported rails with cast blocks. Leadscrew motion.
Y-axis: 1/2“ supported rails with cast blocks. Leadscrew motion.
Z-axis: 1/2” supported rails with cast blocks. Leadscrew motion.
Spindle: Makita or Grizzly laminate trimmer router. (measure diameter of Grizzly router)
Frame: Welded square steel tubing? Wooden torsion box? Aluminum extrusions are probably prohibitively expensive.
Dust collection: will be tied into our dust collection system.
Electronics:
- Motors: NEMA 23
- Motor Drivers: TB6600 Gecko lookalikes (ordered)
- CNC electronics (grbl, BBB, etc.) - Current preferred mechanism is BeagleBone Black with Machinekit. A board for the BBB that splits out its pins to a pair of DB25 parallel ports has been ordered.
Bonus features: