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PLA objects can be fabricated by 3D printing, casting, injection moulding, extrusion, machining, and solvent welding. PLA filament for use in 3D printing. PLA is used as a feedstock material in desktop fused filament fabrication by 3D printers, such as RepRap printers. [39] [40] PLA can be solvent welded using dichloromethane. [41]
There are many types of filament available with different properties. [1] Filament comes in a range of diameters, most commonly 1.75 mm and 2.85 mm, [2] with the latter often being confused with the less common 3 mm. [3] Filament consists of one continuous slender plastic thread spooled into a reel. [4]
Cricut Maker 3 CXPL303 Automatic support for 13 tools, and 300+ materials Cricut Venture 610 mm (24 in) by 23 m (75 ft) 0.65 m/s (25.4 in/s) July 2023 Automatic support for 7 tools, and 100+ materials Cricut Joy Xtra 220 mm (8.5 in) by 1.2 m (4 ft) 0.144 m/s (5.65 in/s) September 2023 Automatic support for 3 tools, and 50+ materials
An early example of a material similar to monomolecular wire deliberately used as a weapon and cutting tool is "borazon-tungsten filament" in G. Randall Garrett's "Thin Edge". (Analog, Dec 1963) [ 4 ] The main character uses a strand from an asteroid towing-cable to cut jail bars and to booby-trap the door of his room.
Left: individual linear polymer chains Right: Polymer chains which have been cross linked to give a rigid 3D thermoset polymer. In materials science, a thermosetting polymer, often called a thermoset, is a polymer that is obtained by irreversibly hardening ("curing") a soft solid or viscous liquid prepolymer (). [1]
Conductive anodic filament, also called CAF, is a metallic filament that forms from an electrochemical migration process and is known to cause printed circuit board (PCB) failures. Mechanism [ edit ]
Filament winding is well suited to automation, and there are many applications, such as pipe and small pressure vessel that are wound and cured without any human intervention. The controlled variables for winding are fibre type, resin content, wind angle, tow or bandwidth and thickness of the fiber bundle.
Polycondensation of glycolic acid is the simplest process available to prepare PGA, but it is not the most efficient because it yields a low molecular weight product. Briefly, the procedure is as follows: glycolic acid is heated at atmospheric pressure and a temperature of about 175 to 185 °C is maintained until water ceases to distill ...