Multi-Extrusion

MatterControl's built in printer profiles are already set up for multi-extrusion on those machines that are capable of it. If you have a custom printer, you can enable multi-extrusion within the device's hardware profile. Specifically, the following settings: 'Printer' > 'General' > 'Extruder Count' and 'Printer' > 'General' > 'Share Temperature' (the latter determines whether the extruders have separate or shared heating elements).

Set Printer to 2 Extruders

Separate manual extruder controls are automatically added for each extruder. For machines with separate heating elements new temperature controls will appear for the additional extruders.

First Add Another Part

Multi-component parts can be imported or created within MatterControl by combining multiple parts. Preparing a part for multi-material printing is a matter of loading in parts, arranging them, and assigning materials.

Aligning Parts

It is possible to automatically align parts that have been designed using the same coordinate system. Align actually moves all the parts on the bed to their absolute positions relative to the currently selected part.

Step 1 - Switch to edit mode

Select Edit To Get Started

Step 2 - Add additional parts to the bed

First Add Another Part

Step 3 - Select the 'Align' button to align the parts

Press Align to Automatically Position Parts

Assigning Materials

Now that you have part you would like to print you may want to assign different material to different sections of the part. You will need to ungroup your part then select each sub-part to assign a material.

Step 1 - Ungroup (if needed)

Ungroup Parts to Change Materials

Step 2 - Assign extruder to part and save as a new file

Choose Your Materials

Wipe Tower and Shield

The wipe tower and shield are extra structures printed to wipe off excess filament oozing out of the extruder that is not in use. To enable either of them, go to Settings > General > Multiple Extruders. You can set the distance of the shield from the object or the width of the tower. Setting these to 0 disables that structure.

Retraction

Retraction when switching between is active extruders is determined by the 'Length on Tool Change' setting ('Filament' > 'Filament' > 'Retraction' > 'Length on Tool Change').

Setting The Tool Change Retraction Length

Support Material

Support material can be assigned to a specific extruder using the setting 'Print' > 'Support Material' > 'Support Material Extruder'.

Tool Change GCode

In Settings > Printer > Custom G-Code there is the option to add GCode that is executed on every tool change. This could be used for a custom wiping routine, for example.

As of MatterControl 1.4, it is not possible to use the second extruder by itself. It is only possible to use it in prints that use the first extruder as well.