A recent series of major developments and events has created a new impetus for 3D printing plastic recycling. 3D printing of recycled plastics has multiple benefits, including lower costs and control over the amount of materials that can be used by 3D printers. Currently, 3D printing filament is produced by melting down virgin plastic pellets and extruding the melted plastic through a circular die which is then rolled up into spools. Printing with pellets or recycled materials is more cost effective and energy efficient than printing with new plastic filaments. In addition, direct printing of plastic pellets eliminates the need for further processing and therefore makes them less expensive.
Plastic has always been one of the leading 3D printer material categories. Now there is an expanding global concern about the amount of plastic product waste and in particular its negative impact on oceans and waterways. Improved pellet 3D printing recycling technology can play an important part in helping solve this environmental problem. 3D printing product developers, engineers, designers and environmentalists working on pellet recycling projects have the opportunity to earn US R&D tax credits.
UK-based Additive Manufacturing Technologies (AMT) is looking closely at an aspect of 3D printing that is critical but all too often swept under the rug in conversation: finishing. Optimization in design, speed and innovation in 3D printers, and strong, high-quality materials are only the beginning of the story of what constitutes a remarkable, useful print. Post-processing has long been heralded as the dirty little secret of the 3D printing world, and it’s easy to overlook what happens after a print job concludes in light of the technological achievements that led to that print job even starting in the first place.
AMT, though, is unafraid to confront post-processing — and its efforts have been rewarded by a receptive industry. Innovate UK awarded AMT as a recipient of a major grant early this year, and that influx of capital was just the jumpstart the company needed to advance its PostPro3D technology.
3D-printed parts of 316L steel can be made stronger and more ductile than the original steel alloy.
Lawrence Livermore National Laboratory (LLNL) researchers found a way to make marine steel via 3D printing. Their new method, already proven to work for one of the most common forms of marine grade stainless steel—low-carbon 316L—could lead to new combinations of high ductility and strength for the ubiquitous alloy.
New materials developed to expand 3D printing need published material properties, but there are layers of difficulty.
Designing functional engineered systems using 3D printing requires more data on material properties. A paper that helped add some of the necessary data on the “Thermal Properties of 3-D Printing Polylactic Acid–Metal Composites” was published. Researchers aimed the study at copperFill, bronzeFill, magnetic iron polylactic acid (PLA), and stainless-steel PLA composites and provide insight into the technical considerations of fused filament fabrication (FFF) composite 3-D printing. The following is taken from this study.
In a bid to strengthen its presence in the additive manufacturing industry, HP has officially opened its new 3D Open Materials and Applications Lab at its Corvallis, Oregon site this week.
The 3,500 square-foot lab will be used by HP and its partners to test new, powdered raw materials for use in HP’s 3D printers, and get real-time feedback from engineers.
“In order for 3D printing to go mainstream, you need the materials piece to take off with the technology, or the ecosystem won’t flourish,” said Tim Weber, global head of 3D Materials and Advanced Applications and general manager of the Corvallis site. “We want materials companies to work with their customers and drive innovation on our platform.”
Major industrial companies have been making serious acquisitions lately, seeking to strengthen their capabilities with metal additive manufacturing. Brent Balinski spoke to Mark Cola, co-founder and CEO of Sigma Labs, about what it all means.
The last few months have been big ones for industrial, no-gimmick 3D printing, for areas including aerospace.
In early September, GE Aviation – already a leading adopter – announced that it would spend $US 1.4 billion acquiring Germany’s SLM Solutions and Sweden’s Arcam.
The two European companies manufacture machines that use lasers and electron beams, respectively, to fuse metal powders – including titanium alloys – as well as offer expertise in areas such as powder metallurgy and software.