Burners and additive manufacturing methods

a plurality of passageways;

a plurality of passageways;

a plurality of passageways;

a first major surface;

The burner of claim 1, wherein the at least one heating element further comprises a structure that increases heat transfer. 20 3. The burner of claim 2, wherein the structure that increases heat transfer comprises individual posts.

a first major surface;

• 20 3) a plurality of ports at the first major surface, each port defined by an end of one of the passageways;
• and

a first major surface;

a plurality of ports at the first major surface, each port defined by an end of one of the passageways;

• and

a plurality of ports at the first major surface, each port defined by an end of one of the passageways;

• and

at least one heating element in or adjacent to at least one of the plurality 10 of passageways that increases the temperature of a wall of the at least one of the plurality of passageways, wherein the at least one heating element comprises a heating fluid;

• wherein the burner body comprises a plurality of layers of metal directly bonded to each other;
• and
• b) at least one connector configured to supply at least a fuel and an oxidizer to the burner 15 body.

at least one heating element in or adjacent to at least one of the plurality of passageways that increases the temperature of a wall of the at least one of the plurality of passageways, wherein the at least one heating element comprises a heating fluid;

• 25 wherein the burner body comprises a plurality of layers of metal directly bonded to each other.

at least one heating element in or adjacent to at least one of the plurality 20 of passageways that increases the temperature of a wall of the at least one of the plurality of passageways, wherein the at least one heating element comprises a heating fluid;

• wherein the burner body comprises a plurality of layers of metal directly bonded to each other;
• and
• generating, with the manufacturing device by an additive manufacturing process, the 25 burner body based on the digital object.

at least one heating element in or adjacent to at least one of the plurality of passageways that increases the temperature of a wall of the at least one of the plurality of passageways, wherein the at least one heating element comprises a heating fluid;

• wherein the burner body comprises a plurality of layers of metal directly bonded 5 to each other.

A method, comprising:

• retrieving, from a non-transitory machine-readable medium, data representing a 30 3D model of a burner body, the burner body comprising:

A method of forming a burner body, the method comprising:

• receiving, by a manufacturing device having one or more processors, a digital object comprising data specifying a plurality of layers of a burner body, the burner body comprising:
• 15 1) a plurality of passageways;

A system comprising:

• a display that displays a 3D model of a burner body;
• and
• one or more processors that, in response to the 3D model selected by a user, cause a 3D 30 printer to create a physical object of the burner body, the burner body comprising: