【3D Printing News】The Secret to High Efficiency and High Quality of Snapmaker J1! Revealed!
3D printing enthusiasts know that 3D printing speed is still relatively slow, especially with FDM technology. Depending on the complexity, size, and accuracy requirements of the model, some types of prints can even take hours or days to complete. A balance must be struck between time and quality.
Snapmaker J1 successfully ensures both quality and speed. Compared to mainstream IDEX 3D printers on the market, a major highlight of the J1 is its high-speed printing. IDEX 3D printers usually struggle to accelerate printing speed, partly because the two independent printheads have to carry more weight, increasing inertia. On the other hand, the X-axis bears more weight when moving the two nozzles, making accurate movements more challenging under such conditions. However, Snapmaker J1 still overcame these difficulties, effectively improving printing speed performance, maintaining a layer height of 0.1 mm at a speed of 350mm/s.
Snapmaker J1 successfully ensures both quality and speed. Compared to mainstream IDEX 3D printers on the market, a major highlight of the J1 is its high-speed printing. IDEX 3D printers usually struggle to accelerate printing speed, partly because the two independent printheads have to carry more weight, increasing inertia. On the other hand, the X-axis bears more weight when moving the two nozzles, making accurate movements more challenging under such conditions. However, Snapmaker J1 still overcame these difficulties, effectively improving printing speed performance, maintaining a layer height of 0.1 mm at a speed of 350mm/s.
There are four solutions based on hardware and software that can accomplish this seemingly impossible task. The first is vibration compensation, also known as input shaping. High-speed movement is prone to excessive or residual vibrations, especially at the end of operation, which can leave unwanted vibrations or ghosting effects on the printed object, thereby affecting quality.
Below is a screenshot recording the vibration levels of the Snapmaker J1 with input shaping on and off. As shown in the figure below, the unevenness of the lines indicates free vibration, which occurs when the printhead changes direction of motion.
Rapid 3D printing of sharp shapes can easily compromise print quality. Second, by analyzing the direction of movement in advance, the turning speed is optimized, improving print quality at corners.
Third, nozzles performing short-distance turns frequently alternate between acceleration and braking. When the entire machine shakes together, the whole process can be very unstable and noisy. Therefore, the Snapmaker J1 adjusts the maximum printing speed of the print nozzles when turning at high frequencies.
Fourth, the Snapmaker J1 introduces a continuous, uninterrupted switching mechanism in IDEX printing, fully utilizing the advantages of IDEX. This mechanism is suitable for situations where two nozzles work alternately, such as dual-color printing. Typically, when one nozzle finishes printing, it stops to the side, and the other nozzle then heats from standby temperature to the initial printing temperature before switching back to continue printing.
Fourth, the Snapmaker J1 introduces a continuous, uninterrupted switching mechanism in IDEX printing, fully utilizing the advantages of IDEX. This mechanism is suitable for situations where two nozzles work alternately, such as dual-color printing. Typically, when one nozzle finishes printing, it stops to the side, and the other nozzle then heats from standby temperature to the initial printing temperature before switching back to continue printing.
Now, with the improvements to both software and hardware in the Snapmaker J1, the idle nozzle will heat to its initial printing temperature while waiting, and then immediately take over printing when the active nozzle moves away from its current position. Through this method, the two independent nozzles can switch seamlessly. You can watch the video below to see how the Snapmaker J1 operates.
In addition to software and hardware improvements, the Snapmaker J1's body is composed of an upper frame, a unibody base, and four aluminum alloy rods. This makes it extremely sturdy and reliable, with minimal swaying and deformation. Furthermore, its industrial-grade linear guides, precisely ground with micro-nanometer CNC technology, ensure smooth operation.
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