For desktop-level 3D printers based on FDM technology, the type and quality of the printed product is highly dependent on the nature of the wire. Conventional PLA or ABS wire has a single nature that limits the user's imagination to some extent. However, advances in hybrid wire technology are gradually changing this situation. (Editor)
Although there are many types of tapping screws, they all have the following similarities:
Recently, 3Dom, a US company that has introduced degradable 3D printed wires, has introduced a new type of wire – a glass-filled PLA wire made of a mixture of conventional PLA materials and glass fibers. Compared to conventional PLA wire, this new wire has better strength, toughness and flexibility, and the price will naturally be more expensive. 
3Dom introduces this new wire to promote the manufacture of 3D printed parts that can be used in engineering or real life and to increase the creative tools of the maker community.
According to China's 3D printing network, the new wire has a maximum tensile strength of 57 MPa, which is nearly 40% higher in strength than conventional PLA materials and 30% higher in toughness. It also has 1.9 times the elasticity of traditional PLA materials with a tensile elongation of up to 3.4%. 
Similar to the usual PLA material, the new material is less prone to warping during printing and has no special odor. The printing temperature is 190-210 °C. It can be printed on non-heated construction tables without the need for special extruders. In addition, according to 3Dom, the objects printed with this material are similar to ceramics and have a high degree of finish.
The new materials are currently available on 3Dom's official website, and the prices for both the 1.75mm and 2.85mm models are $49/roll/kg. It is worth noting that the support structure printed with this material is difficult to remove due to the hardness. 
Xiao Bian believes that with the current development of the 3D printing industry, the development speed of new special wire will be faster and faster. This not only enriches the type of printing, but also allows our imagination to be fully released, and it can add more fun to our lives. Let us look forward to the birth of the next special wire!
(1) are generally made of carbonized carbon steel (accounting for 99% of total production). It can also be made of stainless steel or non-ferrous metals.
(2) The product must be heat treated. Carbon steel tapping screws must be carbonized and stainless steel tapping screws must be solution hardened. In order to make tapping screws to meet the requirements of the standard of mechanical properties and performance.
(3) The product surface hardness is high, the core toughness is good. That is, "soft inside strong outside". This is a major feature of tapping Screw performance requirements. If the surface hardness is low, it can not be screwed into the matrix; If the core toughness is poor, a twist will break, can not be used. So "inside soft outside steel" is self-tapping screw to meet the use of performance, very important requirements.
(4) The surface of the product needs surface protection treatment, generally electroplating treatment. Some product surface must be treated by phosphate (photostatting), such as wall panel self - tapping screws for photostatting.
(5) Production by cold heading process. It is recommended to use high-speed cold heading machine and high-speed wire rolling machine or high-speed planetary wire rolling machine. High speed is emphasized here to ensure product quality. Only the head of tapping screw produced by high-speed machine is well formed and the thread quality is high.
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