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  2. List of 3D-printed weapons and parts - Wikipedia

    en.wikipedia.org/wiki/Urutau_(3D_Printable_Firearm)

    Easier to print, stiffer, and more brittle than other plastics. PLA+ is a term for any blend that enhances some characteristic. PETG Polyethylene terephthalate (glycol-modified), a plastic made by changing the chemicals used to synthesize the more common PET. Easier to print than ABS, and moderately better heat resistance than PLA.

  3. Universal joint - Wikipedia

    en.wikipedia.org/wiki/Universal_joint

    A universal joint (also called a universal coupling or U-joint) is a joint or coupling connecting rigid shafts whose axes are inclined to each other. It is commonly used in shafts that transmit rotary motion .

  4. Linkage (mechanical) - Wikipedia

    en.wikipedia.org/wiki/Linkage_(mechanical)

    the cylindric joint consists of an RP or PR serial chain constructed so that the axes of the revolute and prismatic joints are parallel, the universal joint consists of an RR serial chain constructed such that the axes of the revolute joints intersect at a 90° angle;

  5. Liberator (gun) - Wikipedia

    en.wikipedia.org/wiki/Liberator_(gun)

    The Liberator is a 3D-printable single-shot handgun, the first such printable firearm design made widely available online. [2] [3] [4] The open source firm Defense Distributed designed the gun and released the plans on the Internet on May 6, 2013.

  6. 3D concrete printing - Wikipedia

    en.wikipedia.org/wiki/3D_concrete_printing

    The fastest and most widely used construction 3D printer on the market, with print speeds up to 1000 mm/s. Can achieve layer widths up to 100mm and heights up to 40 mm [18] WASP: Italy: Crane Wasp (Crane/Gantry) Can reconfigure its steel supports to accommodate site constraints and project applications, printing areas up to 100 square meters ...

  7. Teenager accused in Wisconsin school shooting had a ...

    www.aol.com/teenager-accused-wisconsin-school...

    The two agreed to joint custody of Natalie, but she would live primarily with her mother, the documents state. They remarried in 2017, according to their marriage certificate obtained by NBC, but ...

  8. US farm groups want Trump to spare their workers from ... - AOL

    www.aol.com/news/us-farm-groups-want-trump...

    U.S. farm industry groups want President-elect Donald Trump to spare their sector from his promise of mass deportations, which could upend a food supply chain heavily dependent on immigrants in ...

  9. 3D printing - Wikipedia

    en.wikipedia.org/wiki/3D_printing

    3D printing, or additive manufacturing, is the construction of a three-dimensional object from a CAD model or a digital 3D model. [1] [2] [3] It can be done in a variety of processes in which material is deposited, joined or solidified under computer control, [4] with the material being added together (such as plastics, liquids or powder grains being fused), typically layer by layer.