An additive manufacturing process comprising: (a) providing a curable composition comprising: (i) a filler comprising glassflakes having a diameter D.sub.3,99 as determined by light scattering in the range of from 5 to 150 μm; and (ii) one or more curable compounds; (b) controlling an apparatus to form an object by using the curable composition, whereby the curable composition passes a discharge orifice having a minimum diameter Φ.sub.min,
wherein the ratio of the minimum diameter of the discharge orifice to the diameter D.sub.3,99 of the glassflakes (Φ.sub.min/D.sub.3,99) is in the range of 2 to less than 10; and wherein the median diameter D.sub.3,50 of the glassflakes is larger than the thickness of the glassflakes.

A manufacturing system for fabricating a three-dimensional article includes a housing, a sensor within the housing, a coater, a removable powder module (RPM) with a platen, a laser system, and a controller. A method of operating the manufacturing system includes installing the RPM into the housing, forming pillars onto the platen, positioning the top surfaces of the pillars a distance D below a build plane, installing a calibration plate onto the top surfaces of the pillars, and then calibrating the laser system using the sensor. The sensor can include one or more of an optical sensor and an acoustic sensor.

A manufacturing system for fabricating a three-dimensional article includes a housing, a sensor within the housing, a coater, a removable powder module (RPM) with a platen, a laser system, and a controller. A method of operating the manufacturing system includes installing the RPM into the housing, forming pillars onto the platen, positioning the top surfaces of the pillars a distance D below a build plane, installing a calibration plate onto the top surfaces of the pillars, and then calibrating the laser system using the sensor. The sensor can include one or more of an optical sensor and an acoustic sensor.

Certain examples described herein relate to replaceable production material containers for additive manufacturing systems. In an example of a replaceable production material container, an electrical storage device provides at least one production material characteristic to an element of an additive manufacturing system. In certain examples, the electrical storage device stores a range parameter for indicating a production material characteristic offset value in a plurality of production material characteristic offset values. In certain examples, the electrical storage device stores a proportion parameter for determining the at least one production material characteristic on the basis of the production material characteristic offset value.

Certain examples described herein relate to replaceable production material containers for additive manufacturing systems. In an example of a replaceable production material container, an electrical storage device provides at least one production material characteristic to an element of an additive manufacturing system. In certain examples, the electrical storage device stores a range parameter for indicating a production material characteristic offset value in a plurality of production material characteristic offset values. In certain examples, the electrical storage device stores a proportion parameter for determining the at least one production material characteristic on the basis of the production material characteristic offset value.

The invention relates to a device (1) for producing three-dimensional workpieces (15), comprising a carrier (7) for receiving raw material powder (9), a build chamber wall (11, 11a, 11b) which extend substantially vertically and which is adapted to laterally delimit and support the raw material powder (9) applied to the carrier (7); an irradiation unit (17) for selectively irradiating the raw material powder (9) applied to the carrier (7) with electromagnetic radiation or particle radiation in order to produce on the carrier (7) a workpiece (15) manufactured from the raw material powder (9) by an additive layer building method, wherein the irradiation unit (17) comprises at least one optical element; and a vertical movement device (31) which is adapted to move the irradiation unit (17) vertically relative to the carrier (7). The build chamber wall (11, 11a, 11b) and the carrier (7) are adapted to be connected to one another in a stationary manner during the vertical movement of the irradiation unit (17) so that the vertical movement takes place relative to the carrier (7) and relative to the build chamber wall (11, 11a, 11b).

An apparatus, method, system for 3-D printing that includes a nozzle and a movable platform, wherein the platform provides for a constant distance configuration of the platform relative to the extrusion emitter or nozzle thereby precluding the need to level the printer. The apparatus includes motion vectors associated with each direction of motion of the movable platform. A central point of origin is further provided for establishing the directions of movement of the movable cantilevered platform. The direction of motion of the motion vectors each pass through the central point of origin thereby providing a movable platform that stays a constant distance relative to the nozzle when moved in any planar direction within each layer.

This disclosure describes integrated circuits which may be provided in logic circuitry packages and/or replaceable print apparatus components with print material reservoirs. An integrated circuit or logic circuitry package for a replaceable print apparatus component comprises an interface to communicate with a print apparatus logic circuit and at least one logic circuit.

A device is provided for conveying additive manufacturing container/tray assemblies or additive manufacturing trays, the conveying device including at least two chambers for conveying an additive manufacturing container/tray assembly, each conveying chamber including at least one opening allowing the entry/exit of an additive manufacturing container/tray assembly, and each opening being provided with a door for closing the conveying chamber in a sealed manner.

A device is provided for conveying additive manufacturing container/tray assemblies or additive manufacturing trays, the conveying device including at least two chambers for conveying an additive manufacturing container/tray assembly, each conveying chamber including at least one opening allowing the entry/exit of an additive manufacturing container/tray assembly, and each opening being provided with a door for closing the conveying chamber in a sealed manner.