A material cartridge includes a fresh label indicating material of the material cartridge includes previously unused material for fabrication of a three-dimensional (3D) object and a reclaimed indicator of the material cartridge, the reclaimed indicator indicating material subsequently contained within the material cartridge is reclaimed material from fabrication of a previous 3D object, wherein the reclaimed indicator is located underneath the fresh label such that when the material of the material cartridge is depleted, the fresh label is removable to expose the reclaimed indicator.

A system is disclosed for use in additively manufacturing an object. The system may have a support and a first module operatively mounted to an end of the support and configured to discharge a material during motion of the support to form an object. The system may also have a second module configured to sever the material, at least a third module configured to at least one of compact or cure the material, and an actuator configured to cause movement of the second and the at least a third modules relative to the first module.

The disclosure relates to a method for forming a metal article by additive manufacturing and related apparatus for performing the method. A metal particle suspension including a UV-curable polymeric resin liquid medium, and metal particles distributed throughout the liquid medium is deposited and cured by spatially selective exposure to UV radiation in a layer-by-layer process. Metal particle size can be selected in combination with the applied layer thickness to ensure complete cure throughout the applied layer while providing a high print speed and high spatial resolution. Intermittent or periodic partial curing of an applied layer can be used to maintain a homogeneous distribution of metal particles in the applied layer prior to full curing. The final product is achieved after sintering, which removes the cured binder in a debinding step and also provides the desired final article at close to the full density.

The disclosure relates to a method for forming a metal article by additive manufacturing and related apparatus for performing the method. A metal particle suspension including a UV-curable polymeric resin liquid medium, and metal particles distributed throughout the liquid medium is deposited and cured by spatially selective exposure to UV radiation in a layer-by-layer process. Metal particle size can be selected in combination with the applied layer thickness to ensure complete cure throughout the applied layer while providing a high print speed and high spatial resolution. Intermittent or periodic partial curing of an applied layer can be used to maintain a homogeneous distribution of metal particles in the applied layer prior to full curing. The final product is achieved after sintering, which removes the cured binder in a debinding step and also provides the desired final article at close to the full density.

A three-dimensional printing kit can include a polymeric build material including from about 80 wt % to 100 wt % polymer particles having an average particle size from about 10 μm to about 150 μm and from about 0.01 wt % to about 2 wt % dihydrazide, and a fusing agent formulation including an aqueous liquid vehicle and a radiation absorber.

A three-dimensional printing kit can include a polymeric build material including from about 80 wt % to 100 wt % polymer particles having an average particle size from about 10 μm to about 150 μm and from about 0.01 wt % to about 2 wt % dihydrazide, and a fusing agent formulation including an aqueous liquid vehicle and a radiation absorber.

The invention comprises a 3D printer for additively manufacturing a multilayer component. The 3D printer comprises at least two separate dispensers (2) coating a conveyor belt (3) with respectively different raw material, a manufacturing unit in which at least part of the raw material is added to the component (8) as a new layer, at least two separate recovery devices (12) for selectively recovering the respectively different raw material, which is not consumed when a layer is added to the component (8), and returning the raw material to the respective associated dispenser (2) and conveyor belt (3) which transports the raw material from the dispenser (2) to the manufacturing unit and further to the recovery device (12) in the lateral direction.

The invention comprises a 3D printer for additively manufacturing a multilayer component. The 3D printer comprises at least two separate dispensers (2) coating a conveyor belt (3) with respectively different raw material, a manufacturing unit in which at least part of the raw material is added to the component (8) as a new layer, at least two separate recovery devices (12) for selectively recovering the respectively different raw material, which is not consumed when a layer is added to the component (8), and returning the raw material to the respective associated dispenser (2) and conveyor belt (3) which transports the raw material from the dispenser (2) to the manufacturing unit and further to the recovery device (12) in the lateral direction.

Provided herein is a method of recycling reactive prepolymers from additively manufactured articles or recovered coating material that comprises a crosslinked polymer formed from a single-cure resin comprising a reactive blocked prepolymer and a crosslinker, by forming and recovering a regenerated reactive prepolymer. Light-polymerizable resins, methods of making recyclable objects from such resins, and methods for sustainable manufacturing are also provided.

A device for metering one or more powder(s) (A, B) to produce a flow (23) of powder(s) and of a carrier gas at a given volume flow rate, comprises: ⋅at least a first source (25) suitable for supplying a first flow (27) comprising a first powder (A) and a first carrier gas (G1) substantially at the given volume flow rate, ⋅a source (33) of a carrier gas suitable for supplying an adjustment carrier gas flow (35) substantially at the given volume flow rate, ⋅an outlet junction (49) for emitting said flow of powder(s) and of carrier gas, ⋅a first proportional valve (59), ⋅an adjustment proportional valve (75), and ⋅a control system (21) suitable for controlling at least the first proportional valve and the adjustment proportional valve so that the flow of powder(s) and of carrier gas has a volume flow rate substantially equal to the given volume flow rate.