Abstract: A knife sheath for a knife, components thereof and associated methods. The knife has a blade and a handle. The knife sheath includes a backing comprising a first material. A shell comprises a second material different than the first material. The shell is supported by the backing. The shell and the backing bound a blade compartment sized and shaped to receive the blade of the knife. The shell has a perimeter and includes a peripheral edge margin forming a portion of the perimeter of the shell. A cover comprises a third material different than the second material. The cover is supported by the backing. The cover overlies the peripheral edge margin of the shell. The peripheral edge margin of the shell is disposed between the backing and the cover.

Abstract: A multi-tool kit or system, components thereof, and associated methods. The multi-tool kit enables enabling a user to assemble a multi-tool with desired tools. The multi-tool kit may include different tool heads, different handles, and/or different removeable tools from which the user can select and assemble into a multi-tool.

Abstract: A knife system including a blade, a blade support, and a blade tool. The blade includes a cutting edge, a blade connector, and a blade holder opening. The blade support includes a handle and a blade carrier. The blade carrier releasably connects to the blade connector to mount the blade to the blade support. The blade tool includes a blade tool compartment that receives the blade. The blade tool is able to flex the blade to enable the blade carrier to connect to the blade connector to mount the blade to the blade support and to disconnect from the blade connector to separate the blade and the blade support. The blade tool includes a blade holder receivable in the blade holder opening of the blade to prevent the blade from moving with the blade support when the blade carrier is connected to and disconnected from the blade.

Abstract: A system is provided for sensing an analyte in a breath sample. The system includes a breath bag, a cartridge and a base. The breath bag contains the breath sample. The bag includes a mouthpiece fixedly disposed on the breath bag. The cartridge includes an interactant that reacts with the analyte and generates a change in an optical characteristic relative to a reference. The base includes a flow path, a breath bag receiver for detachably receiving and retaining the mouthpiece of the breath bag in fluid communication with the flow path, and a cartridge receiver that detachably receives and retains the cartridge in the base, such that the base engages the cartridge so that the interactant is in fluid communication with the flow path.

Abstract: A conveyor or other transport mechanism is provided to support multiple, sequential builds from a three-dimensional fabrication machine. The conveyor may be heated/cooled, coated, or otherwise treated to assist in adhesion during a build, as well as removal of objects after a build. Each fabricated object may be automatically removed from the conveyor as the conveyor moves in order to restore a buildable surface for fabrication of additional objects.

Abstract: A conveyor or other transport mechanism is provided to support multiple, sequential builds from a three-dimensional fabrication machine. The conveyor may be heated/cooled, coated, or otherwise treated to assist in adhesion during a build, as well as removal of objects after a build. Each fabricated object may be automatically removed from the conveyor as the conveyor moves in order to restore a buildable surface for fabrication of additional objects.

Abstract: A conveyor or other transport mechanism is provided to support multiple, sequential builds from a three-dimensional fabrication machine. The conveyor may be heated/cooled, coated, or otherwise treated to assist in adhesion during a build, as well as removal of objects after a build. Each fabricated object may be automatically removed from the conveyor as the conveyor moves in order to restore a buildable surface for fabrication of additional objects.

Abstract: A conveyor or other transport mechanism is provided to support multiple, sequential builds from a three-dimensional fabrication machine. The conveyor may be heated/cooled, coated, or otherwise treated to assist in adhesion during a build, as well as removal of objects after a build. Each fabricated object may be automatically removed from the conveyor as the conveyor moves in order to restore a buildable surface for fabrication of additional objects.

Abstract: A conveyor or other transport mechanism is provided to support multiple, sequential builds from a three-dimensional fabrication machine. The conveyor may be heated/cooled, coated, or otherwise treated to assist in adhesion during a build, as well as removal of objects after a build. Each fabricated object may be automatically removed from the conveyor as the conveyor moves in order to restore a buildable surface for fabrication of additional objects.

Abstract: A conveyor or other transport mechanism is provided to support multiple, sequential builds from a three-dimensional fabrication machine. The conveyor may be heated/cooled, coated, or otherwise treated to assist in adhesion during a build, as well as removal of objects after a build. Each fabricated object may be automatically removed from the conveyor as the conveyor moves in order to restore a buildable surface for fabrication of additional objects.