PegLeg: Specifications

Physical Properties:

  1. Work Area: 11″ X 17″ (B-Size), 3-5″ Z-direction
  2. Envelope: 17″ X 26” X 10″ Max (W x L x H)  **FINAL 12/02/2014, Rev A
  3. Movable cutting head on gantry, stationary work area
  4. Weight: TBD, lowest overall machine density (weight per envelope volume) possible
  5. Modular: optional functionality (TBD)
    1. Modular head:
      1. Milling
      2. Laser
      3. Water Jet (??)

Electrical Properties:

  1. Operating Voltage: Standard PC type PSU, 3.3V, 5V, and 12V. 500W max supply.
  2. 12V, 2A stepper drivers
  3. Dremel or DC motor spindle; TBD
  4. NEMA 17 Bi-Polar stepper motors (2 X-axis, 1 Y-axis, 1 Z-axis) **Design accommodates NEMA 23 motors as well, with upgraded stepper drivers

Software / Hardware / Control:

  1. Arduino: Uno w/ GRBL Shield
  2. Pololu Stepper Drivers: DRV8825 or A4988
  3. GRBL

Performance Specs:

  1. Linear cutting speed: TBD
  2. Rapids speed: TBD
  3. Cutting RPM: TBD
  4. Multi-Tool support: TBD

Working Output:

  1. All plastic stock: UHMW, HDPE, etc.
  2. Plastic sheet, 0.040″ and up
  3. Wood
  4. Cardboard, 0.040″ and up
  5. Limited soft metals: Brass, Aluminum
  6. Steel: probably not, special tools and lubrication processes required
  7. Special processes: PCB [TBD]