PRODUCT DEVELOPMENT | TECHNOLOGY
Ultrasint TPU is available at Materialise for design and engineering professionals and replaces TPU 92A-1, previously offered for SLS. Mimaki Engineering has introduced the
3DFF-222, a desktop 3D printer using FFF (fused filament fabrication) technology that forms objects of sizes up to 210 × 200 × 195 mm. The company says that the printer is ideal for building geometric samples, small-lot moulding and prototypes. When using the 3DFF-222, a print jig can be created that reduces manufacturing costs and stabilises print quality due to in-house production. The 3DFF-222 can also be used to form moulds for vacuum moulding. A reeled filament is inserted in the cartridge and set in the main unit. The filament supplies the nozzle automatically. A camera and LED light are mounted for remotely monitoring the process of formation. By just installing a mobile app to a smartphone or tablet computer, progress can be checked from anywhere. Modelling speed is 10-200 mm/s. MakerBot has expanded its 3D printing
materials offering with polyethylene terephthalate glycol (PETG), which is the first speciality material to be released for its Method 3D Printer, offering higher levels of performance. “PETG is the first in a new line of materials for Method,” says Nadav Goshen, CEO, MakerBot. “Our customers have been asking for different materials to use for a wide range of applications that require high strength and durability. PETG is one of the most widely used polymers today. Because of its advanced proper- ties and versatility, we view PETG as an excellent material to be used on the manufacturing line and for short-run production runs.” 3D printable parts made of PETG are suitable for industrial applications, including functional prototypes, jigs and fixtures, and end-use parts. The industrial-grade material has a heat deflection temperature of up to 70°C and strong layer adhesion designed to reduce shrinkage and warping during printing. PETG is resistant to moisture and many chemicals, including some alka- line and acidic substances. It can be used with Method’s water-soluble PVA for complex parts and easy support removal. The company adds that PETG has greater strength and flexibility qualities than other materials, such as PLA and ABS, and is odourless when printing. Further, the material prints with a glossy finish and has a good degree of ductility. Intended for users looking for advanced material properties, the Method speciality materials provide basic print performance and can require additional workflow steps to print successfully. PETG requires the application of an adhesion stick
www.injectionworld.com
Above: MakerBot has expanded its 3D printing materials offering with PETG, which is the first speciality material to be released for its Method 3D Printer, offering higher levels of performance
to the build plate prior to printing. MakerBot also has a line of precision materials developed for Method that cover the majority of cases for prototyping, jigs and fixtures, and end-use parts. These materials have been tested by Maker- Bot for the highest reliability and measurably accurate parts. These materials currently include MakerBot Tough, MakerBot PLA, and MakerBot PVA. MakerBot has also recently launched Method X, a manufacturing workstation engineered to challenge traditional manufacturing with real ABS material, a 100°C chamber, and Stratasys SR-30 soluble supports to deliver good dimensional accuracy and precision for complex, durable parts. Method X is capable of printing real ABS that can withstand up to 15°C higher temperatures, is up to 26% more rigid, and up to 12% stronger than modified ABS formulations used on desktop 3D printers. Real ABS parts printed on Method X are claimed to have no warping or cracking that typically occurs when printing modified ABS on desktop platforms without heated chambers. The company adds that desktop 3D printer manufacturers attempt to get around part deforma- tion that occurs, due to the high shrinkage rate of the material, by using a heated build plate in combination with altered ABS formulations that are easier to print but compromise thermal and mechanical properties. MakerBot Precision ABS has a higher heat deflection temperature of up to 15°C, which is modified to make the material printable without a heated chamber. With Method X, the 100°C Circulating Heated Chamber significantly reduces part deformation while increasing part durability and surface finish.
October 2019 | INJECTION WORLD 73
PHOTO: MAKERBOT
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