The front of the build arm holds the build head in place over the resin tray. The build head is secured in place by a locking lever with kinematic coupling. Magnets in the assembly help align the build head correctly on the arm.
The back of the build arm is connected to the Z-axis, which moves the assembly vertically in the printing process.
The build arm consists of the following components:
1. LOCKING LEVER Locks the build head securely in place. Turn clockwise to lock, and counter clockwise to release.
2. BALL JOINT Allows the build head to be adjusted in all three dimensions. This allows the build head to be aligned parallel to the surface of the PDMS.
3. KINEMATIC COUPLING Functions as the interface between the build head and the build arm. It keeps the the two aligned together with a high degree of precision and accuracy. In addition, it contains magnets to keep the build head from falling off when the locking lever is released.
4. CALIBRATION BOLT Locks the ball joint in position; securing the build head position relative to the PDMS.
5. CALIBRATION HEX KEY This tool is used to loosen and tighten the calibration bolt. When not in use, it is stored in the build arm.
6. BUILD HEAD For detailed information about the build head, see below...
► ABOUT THE BUILD HEAD
Parts are printed onto the build plate, on the bottom of the build head. The build head is made of the following five elements:
1. KINEMATIC BEARINGS Interface with the coupling on the build arm.
2. BUILD HEAD HOUSING The structure of the build head, which was designed to be easily gripped in one hand.
3. MAGNETS These three magnets interface with the magnets in the build arm.
4. BUILD PLATE The aluminum plate upon which parts are printed.
► HOW TO INSTALL THE BUILD HEAD
Turn the locking lever on the build arm counter-clockwise, into the open position.
Insert the top of the build head into the locking mechanism on the build arm.
When oriented properly, you will feel the magnetic connections pull the build arm into the correct position.
Secure the build arm in place by turning the locking lever clockwise, into the closed position.
In order to be able to print with Ember, you must first calibrate the build head. For instruction on how to do this, see the section, Calibrate the build head.
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