Material Delivery Module (MDM)

Each Printer has one Material Delivery Module (MDM), which contains a material cartridge and supplies material to the resin tray via a pump and material-delivery tube. When your cartridge is close to being empty, the Controller GUI and Printer GUI will let you know so that you can prepare to install a new material cartridge.

WARNING: The SYSTEM operator is not authorized to modify the MDM configuration, unless specifically authorized by 3d systems to do so. Only a 3D Systems certified service technician is permitted to make such modifications. if the operator attempts such changes, it risks irreparable damage to the system.

MDM Components

Your MDM may have a different layout, depending on the type of material pump and MCO your printer has. Both versions are seen below:

A Cartridge Chute - Load the material cartridge into this chute. Please see the section Load Material cartridges for more information.
B Cartridge Coupler/MCO Door - This coupler connects to the material-cartridge valve at the bottom of the cartridge chute. It opens/closes the cartridge valve to start/stop material flow into the first set of tubing. The coupler is behind the MCO Door. See the Material-Presence Sensor section below to see the door open.
C Cartridge-Coupler Release - Pull the ring out and to the right to release the MCO Door and expose the Cartridge Coupler. Only do this in the Material Changeover Procedure.
D Material Pump - This is a peristaltic pump that facilitates the flow of material into the resin tray in the upper build chamber.
E Pump-Delivery Tube - Delivers material from the cartridge to the material pump.
F Resin-Tray Delivery Tube - Delivers material from the material pump to the resin tray in the upper build chamber
G Drip Tray - This tray is meant to catch any material drips or leaks within the MDM. Please see the section Clean Drip Tray for more information.
green-arrow.png Material Flow Start - Material starts from the material cartridge.
red-arrow.png Material Flow to Resin Tray - Material gets pumped from the peristaltic pump and flows through to the resin tray.
--- Material Path

Material-Presence Sensor

When you open up the MCO Door to expose the Bottle Coupler, as in the Material Changeover procedure, you will also see a Material-Presence Sensor. This sensor detects if material is present in the Pump Delivery Tube.

Cartridge Chute


A Eject Button - Press this button to release the material cartridge from the cartridge chute.
B Cartridge Guide - Engages the cartridge Key to ensure the material cartridge is installed in the correct orientation
C Cartridge Chute - The material cartridge is loaded into this area.
D Material Cartridge Coupler - When the material cartridge is fully seated, this coupler attaches the cartridge to the MDM.
E Material Cartridge Chip Reader - This reads the Cartridge Chip attached to the Material Cartridge.
F MDM Handle - Grab the MDM by this handle to pull it out of the Printer and push it back in.

MDM Closed/Open

The MDM slides in and out of the Printer on tracks. It does not come detached from the machine in normal operation. Only 3D Systems Service may remove the MDM from its tracks. Please see the images below, which show the MDM fully closed and fully open.

mdm-closed-draw.jpg mdm-open-draw.jpg
MDM closed MDM open