All of the content for this tutorial was provided by fellow maker Matthew Mead. The original can be found on his personal blog.
This tutorial will show you how to integrate the Discov3ry with the Printrbot Metal Simple or the Printrbot Metal Plus. This single extruder setup will allow you to switch between your filament and paste extruders.
1. OPEN UP AND ACCESS THE PRINTRBOT ELECTRONIC BOARD
Depending on the model, this may be located in different spots of your printer.
2. CONNECT PASTE EXTRUDER WIRING
For this step you will need a connector cable such as this OSEPP I2C Bus Cable.
Solder together Discov3ry wires with the Printrbot motor leads in the following pattern: black to red; green to green; blue to yellow; red to blue (Figure 1).
3. Plug in the Discov3ry
Plug wires into the connector cable and insert directly into the extruder motor plug on the Printrboard labeled “EMOT” on the Printrboard F board. (see "E" in Figure 2).
4. Print paste extruder tip mount
The 3D designs for the mounts and adapters are graciously provided by Matthew Mead on Thingiverse. On the left are some photos to show how the pieces fit together.
The mount consists of three separate pieces:
- Mount body* – the major body of the mount that screws to the Printrbot using existing screw holes and longer M3 screws.
- Clip* – this piece is screwed to the mount body using 6-32 x 1/2″ machine screws; it clamps the paste extruder tube or paste tip to the mount body allowing it to be held firmly in place. You may want to use a drill or screw gun to drive these screws.
- Shim** – this piece has oversized holes and is positioned between the Metal Simple’s extruder and the mount body. The 6-32 screws are inserted through the oversized holes.
*Required by both the Metal Plus and Metal Simple.
**Required only by the Metal Simple to position it properly due to horizontal extruder plate design.
For tips and information on how better to print these pieces please visit the original blog.
5. Install Paste Extruder Tip Mount
Figure 3 shows the shim installed on the Printrbot Simple Metal. You can see how it lines up with the M3 holes that mount the extruder.
Figure 4 shows all three pieces of the paste mount “installed” (actually taped on in this early picture) on a Printrbot Metal Simple.
For tips on connecting the tube and printing see Matthew Mead's blog.