Abstract: The present disclosure is drawn to a composite particulate build material, including 92 wt % to 99.5 wt % polymeric particles having an average size from 10 ?m to 150 ?m and an average aspect ratio of less than 2:1. The composite particulate build material further includes from 0.5 wt % to 8 wt % reinforcing particles having an average size of 0.1 ?m to 20 ?m and an average aspect ratio of 3:1 to 100:1 applied to surfaces of the polymeric particles, wherein the reinforcing particles include mica or glass.

Abstract: The present disclosure is drawn to a composite particulate build material, including 92 wt % to 99.5 wt % polymeric particles having an average size from 10 ?m to 150 ?m and an average aspect ratio of less than 2:1. The composite particulate build material further includes from 0.5 wt % to 8 wt % reinforcing particles having an average size of 0.1 ?m to 20 ?m and an average aspect ratio of 3:1 to 100:1 applied to a surface of the polymeric particles.

Abstract: The present disclosure is drawn to a composite particulate build material, including 92 wt % to 99.5 wt % polymeric particles having an average size from 10 ?m to 150 ?m and an average aspect ratio of less than 2:1, The composite particulate build material further includes from 0.5 wt % to 8 wt % reinforcing particles having an average size of 0.1 ?m to 20 ?m and an average aspect ratio of 3:1 to 100:1 applied to a surface of the polymeric particles.

Abstract: The present disclosure is drawn to material sets for 3-dimensional printing, 3-dimensional printing systems, and 3-dimensional printed parts. A material set can include a polyamide polymer powder having an average particle size from 20 ?m to 120 ?m and a fusing agent. The polyamide-11 can have a solution viscosity from 1.5 to 1.75 at room temperature, and may increase by no more than 5% after exposure to 180° C. for 20 hours. The fusing agent can include an energy absorber capable of absorbing electromagnetic radiation to produce heat.

Abstract: The present disclosure is drawn to material sets for 3-dimensional printing, 3-dimensional printing systems, and 3-dimensional printed parts. A material set can include a powder bed material of composite particles including glass beads coated with polyamide-12 polymer. The composite particles can have an average particle size from 20 ?m to 200 ?m, and the polyamide-12 polymer can include greater than 80 meq/g carboxylic end groups and less than 40 meq/g amino end groups. The fusing agent can include an energy absorber capable of absorbing electromagnetic radiation to produce heat.

Abstract: Agent calibration can, in an example implementation, include generating a calibration based on a quantity of energy absorbed by a build material treated with different quantities of an agent and converting a portion of a three-dimensional object model to a quantity of agent based on the calibration.

Abstract: A detailing agent for three-dimensional (3D) printing includes a colorant present in an amount ranging from about 1.00 wt % to about 3.00 wt % based on a total weight of the detailing agent. The colorant is a dye having substantially no absorbance in a range of 650 nm to 2500 nm. The detailing agent also includes a co-solvent, a surfactant, and a balance of water.

Abstract: The present disclosure is drawn to material sets for 3-dimensional printing, 3-dimensional printing systems, and 3-dimensional printed parts. A material set can include a polyamide polymer powder having an average particle size from 20 ?m to 120 ?m and a fusing agent. The polyamide-12 powder can include greater than 80 meq/g carboxylic end groups and less than 40 meq/g amino end groups. The fusing agent can include an energy absorber capable of absorbing electromagnetic radiation to produce heat.

Abstract: The present disclosure is drawn to material sets for 3-dimensional printing, 3-dimensional printing systems, and 3-dimensional printed parts. A material set can include a powder bed material of composite particles including glass beads coated with polyamide-12 polymer. The composite particles can have an average particle size from 20 ?m to 200 ?m, and the polyamide-12 polymer can include greater than 80 meq/g carboxylic end groups and less than 40 meq/g amino end groups. The fusing agent can include an energy absorber capable of absorbing electromagnetic radiation to produce heat.

Abstract: The present disclosure is drawn to material sets for 3-dimensional printing, 3-dimensional printing systems, and 3-dimensional printed parts. A material set can include a polyamide polymer powder having an average particle size from 20 ?m to 120 ?m and a fusing agent. The polyamide-11 can have a solution viscosity from 1.5 to 1.75 at room temperature, and may increase by no more than 5% after exposure to 180° C. for 20 hours. The fusing agent can include an energy absorber capable of absorbing electromagnetic radiation to produce heat.

Abstract: A detailing agent for three-dimensional (3D) printing includes a colorant present in an amount ranging from about 1.00 wt % to about 3.00 wt % based on a total weight of the detailing agent. The colorant is a dye having substantially no absorbance in a range of 650 nm to 2500 nm. The detailing agent also includes a co-solvent, a surfactant, and a balance of water.

Abstract: Agent calibration can, in an example implementation, include generating a calibration based on a quantity of energy absorbed by a build material treated with different quantities of an agent and converting a portion of a three-dimensional object model to a quantity of agent based on the calibration.