Devices, kits, and methods for making a carved crayon are provided. In one aspect, a crayon carving device includes a base, a pantograph armature coupled to the base, a crayon positioner, and at least one guide template parallel to the crayon positioner. The pantograph armature includes a motorized drive shaft with a drill tip for carving an outside surface of a crayon body, as well as a guide tip for tracing along a guide template that directs where the drill tip carves. In some embodiments, the guide template includes a stationary bridge support and a plurality of removable carving bucks that insert into one of multiple openings on the bridge support. The surface features of each of the carving bucks may be traced by the guide tip to generate a corresponding carving on the surface of a crayon body.

Devices, kits, and methods for making a carved crayon are provided. In one aspect, a crayon carving device includes a base, a pantograph armature coupled to the base, a crayon positioner, and at least one guide template parallel to the crayon positioner. The pantograph armature includes a motorized drive shaft with a drill tip for carving an outside surface of a crayon body, as well as a guide tip for tracing along a guide template that directs where the drill tip carves. In some embodiments, the guide template includes a stationary bridge support and a plurality of removable carving bucks that insert into one of multiple openings on the bridge support. The surface features of each of the carving bucks may be traced by the guide tip to generate a corresponding carving on the surface of a crayon body.

Disclosed is a powder build material handling system for a three-dimensional printer. The system comprises a delivery system. The delivery system is to carry powder build material in a flow of gas from a powder build material supply. The delivery system is to filter the flow of gas to separate the powder build material from the flow of gas. The delivery system is to direct the filtered flow of gas to the powder build material supply to form a closed system.

Disclosed is a powder build material handling system for a three-dimensional printer. The system comprises a delivery system. The delivery system is to carry powder build material in a flow of gas from a powder build material supply. The delivery system is to filter the flow of gas to separate the powder build material from the flow of gas. The delivery system is to direct the filtered flow of gas to the powder build material supply to form a closed system.

Devices, kits, and methods for making a carved crayon are provided. In one aspect, a crayon carving device includes a base, a pantograph armature coupled to the base, a crayon positioner, and at least one guide template parallel to the crayon positioner. The kit may further include a wrapper removal mechanism configured to remove a wrapper from a crayon, such that the crayon carving device may be used on an exposed crayon surface.

Devices, kits, and methods for making a carved crayon are provided. In one aspect, a crayon carving device includes a base, a pantograph armature coupled to the base, a crayon positioner, and at least one guide template parallel to the crayon positioner. The kit may further include a wrapper removal mechanism configured to remove a wrapper from a crayon, such that the crayon carving device may be used on an exposed crayon surface.

A motor fixing structure of an engraving machine is provided. A lifting platform has a through hole, at least three protruding walls spaced and arranged around the through hole, and notches each defined between every two of the protruding walls. The outer side of each notch is provided with a clamping block. The lifting platform has a radial guide hole corresponding in position to the clamping block. The clamping block has a vertical aperture. The bottom surface of the lifting platform has an adjustment seat with a peroration. The protruding walls are fitted with a turning disc. The turning disc has at least three oblique curved holes. The turning disc is pivotally connected with a shaft. A drive rod is screwed to the shaft. A quick release assembly is inserted in the corresponding oblique curved holes, the aperture and the guide hole for tightening or loosening the clamping block.

Disclosed is a powder build material handling system for a three-dimensional printer. The system comprises a delivery system. The delivery system is to carry powder build material in a flow of gas from a powder build material supply. The delivery system is to filter the flow of gas to separate the powder build material from the flow of gas. The delivery system is to direct the filtered flow of gas to the powder build material supply to form a closed system.

A motor fixing structure of an engraving machine is provided. A lifting platform has a through hole, at least three protruding walls spaced and arranged around the through hole, and notches each defined between every two of the protruding walls. The outer side of each notch is provided with a clamping block. The lifting platform has a radial guide hole corresponding in position to the clamping block. The clamping block has a vertical aperture. The bottom surface of the lifting platform has an adjustment seat with a peroration. The protruding walls are fitted with a turning disc. The turning disc has at least three oblique curved holes. The turning disc is pivotally connected with a shaft. A drive rod is screwed to the shaft. A quick release assembly is inserted in the corresponding oblique curved holes, the aperture and the guide hole for tightening or loosening the clamping block.

Devices, kits, and methods for making a carved crayon are provided. In one aspect, a crayon carving device includes a base, a pantograph armature coupled to the base, a crayon positioner, and at least one guide template parallel to the crayon positioner. The pantograph armature includes a motorized drive shaft with a drill tip for carving an outside surface of a crayon body, as well as a guide tip for tracing along a guide template that directs where the drill tip carves. In some embodiments, the guide template includes a stationary bridge support and a plurality of removable carving bucks that insert into one of multiple openings on the bridge support. The surface features of each of the carving bucks may be traced by the guide tip to generate a corresponding carving on the surface of a crayon body.