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Revision as of 17:41, 2 February 2012 by Whosawhatsis (talk | contribs) (Parts)
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Crystal Clear action run.png

Release status: experimental

Wallace is a parametric version of the Printrbot design.
CAD Models
External Link


The RepRap Wallace is named after Alfred Russel Wallace, who independently discovered the theory of evolution by natural selection after Darwin, but before he published. It is loosely based on the Printrbot, but is a complete redesign in OpenSCAD to be more robust (without the loose press-fit mountings), but still extremely simple. It is designed for use with 6mm smooth/threaded rods and NEMA14 motors like the ones used in the Huxley design, and LM6UU bearings for linear motion, though its parametric nature means that NEMA17/M8/LM8UU versions will also be possible. STLs can be found on thingverse, the source is on Github, and the latest updates/previews can be found on Whosawhatsis' Google+ page. This design is a work in progress.

Video showing Printf.bot first print on 2011.12.31, driven by R2C2 (recorded on 2011.12.31 by Casainho):

Video recorded on 2011.12.17 by Whosawhatsis:



In addition to the printed parts, the following parts are required (this is a tentative list, and the parts WILL change before the design is complete):

  • 4 high-torque NEMA14 motors. Sources:
  • 1 set of electronics
  • 1 extruder
  • 3 pairs of 6mm smooth rods (measurements will depend on desired build volume. 350 mm X 320mm X 350mm gives about 200 x 200 x 170mm).
  • 2 pairs of M6 threaded rod (measurements will depend on desired build volume) (+3 more: 1 between z-top-clamps, 2 for optional feet?).
  • 10 M6 nuts -- (8 for threaded X-rod, 2 for Z leadscrews?) (+4 for Z_top_clamp?, +4 for Y-Idler)
    • These can be found locally.
  • 2 M6 nylock nuts -- (for the leadscrew couplers. You may substitute 2 regular M6 nuts tightened against eachother to lock them in place.)
    • These can be found locally.
  • 8 M6 washers. (8 for threaded X-rod)
    • These can be found locally.
  • 11 LM6UU linear bearings. (4 Y-bars/Base, 4 Z-bars/X-ends, 3 X-bars/X-carriage)
  • 3 623 bearings. (6 needed for the double-bearing idlers)
  • 17 10mm M3 screws -- (8 base motor + Y-bearing clamps, 4 Z-sockets, 2 drive pulleys, 2 Z-connectors, 1 X-belt clamp)
    • These can be found locally.
  • 7 30mm M3 screw -- (2 Y-idlers, 2 Y-belt mounts, 3 X-motor mount?)
    • These can be found locally.
  • 2 50mm M3 -- (X idlers + x-bar/z-bearing clamps?)
    • These can be found locally.
  • Approximately 13 M3 nuts and washers.
    • These can be found locally.
  • 1 sheet of MDF or other flat material (measurements will depend on desired build volume).
    • You can buy this locally and cut to size.
  • 2 belts
    • This could be of type "XL timing belt" like here. Or type "MXL timing belt" like here. It should match your drive pulleys from below.

Printed parts