Ultimate Guide to Anycubic Kobra 2 Plus Nozzle Thermistor

Ultimate Guide to Anycubic Kobra 2 Plus Nozzle Thermistor

The Anycubic Kobra 2 Plus 3D printer is a powerful tool for enthusiasts and professionals alike, offering a balance of speed, precision, and versatility. However, like any complex device, it comes with its unique set of challenges. In this comprehensive guide, we will delve into the critical components of the Anycubic Kobra 2 Plus – the nozzle and thermistor.

These crucial elements play a vital role in maintaining optimal performance and ensuring high-quality 3D prints. Let’s unravel the intricacies of the Anycubic Kobra 2 Plus nozzle and thermistor to help you unlock the full potential of your 3D printing experience.

Anycubic Kobra 2 Plus 3D Printer Features and Issues

The Anycubic Kobra 2 Plus 3D printer features a proprietary PTFE-lined hotend. However, this hotend can be slow to heat up and is prone to clogging. Its flow rate is approximately 20 mm^3/s with a 0.4mm nozzle. Interestingly, the nozzle design is custom, with a slight flair at the end, making it incompatible with regular volcano nozzles. If you’re looking to upgrade, note that the Kobra 2’s heatbreak and nozzle are not standard, but some users have successfully replaced the heatbreak with a Vyper-style one, allowing regular volcano nozzles to fit well

Anycubic Kobra 2 Plus Overview

The Anycubic Kobra 2 Plus is a high-speed FDM 3D printer that offers a balanced set of features. Let’s delve into its specifications, thermistor functions, and compatibility:

  1. Specifications:

    • Build Volume: The Kobra 2 Plus provides a large build volume of 320 x 320 x 400mm.
    • Extruder: It features a direct drive extruder with double gears for efficient filament feeding.
    • Bed Leveling: The printer utilizes the LeviQ 2.0 auto-leveling system with 49-point calibration.
    • Print Speed: It can achieve a maximum print speed of 500mm/s, with an average speed of 300mm/s.
    • Connectivity: The Kobra 2 Plus supports WiFi and USB connectivity.
    • Filament Compatibility: It works with PLA, ABS, PETG, and TPU materials.
    • Nozzle Diameter: The nozzle has a diameter of 0.4mm.
    • Nozzle Temperature: The maximum nozzle temperature is 260°C.
    • Hotbed Temperature: The hotbed can reach up to 90°C.
    • Control Screen: It features a 4.3″ LCD touch screen for easy navigation.
    • Built-in Capacity: The Kobra 2 Plus comes with 8GB of built-in storage.
  2. Thermistor Functions:

    • The thermistor in the Kobra 2 Plus is responsible for monitoring the temperature of the hotend and heated bed.
    • It ensures precise temperature control during printing, preventing overheating or underheating.
    • The accurate readings from the thermistor contribute to successful 3D prints.
  3. Compatibility:

    • Unfortunately, the Anycubic Kobra 2 Plus is not currently compatible with popular 3D printing software such as OctoPrint, Mainsail, Fluidd, or SimplyPrint.
    • If you’re looking for compatibility with these software options, consider exploring other 3D printers that support them.

In summary, the Anycubic Kobra 2 Plus strikes a balance between speed, build volume, and features, making it a versatile choice for 3D printing enthusiasts. Keep in mind its compatibility limitations when selecting your preferred software for printing.

A photo of a metal heat element with a red silicone sock and white electrical wires.

IMG Source: media-amazon.com

Troubleshooting Hot End Issues for Anycubic Kobra 2+

If you’re experiencing issues with the hot end of your Anycubic Kobra 2 Plus, here are some steps you can take to troubleshoot and potentially resolve the problem:

  1. Check the Nozzle Temperature:

    • Ensure that the nozzle temperature is set correctly and can reach the desired temperature. For PLA, the typical temperature range is 190-210°C, while for ABS, it’s around 230-240°C.
    • If you suspect a clogged nozzle, briefly heat the print head to a temperature above 230°C and then gently push the filament into the extruder. You can also use a nozzle cleaning kit to unclog any blockages.
  2. Inspect the Hot End Fan:

    • The hot end fan plays a crucial role in cooling the filament as it exits the nozzle. Make sure it’s functioning properly.
    • If you encounter issues with the hot end fan, consider replacing or upgrading it to optimize your printing experience.
  3. Replace the Hot End:

    • Over time, the hot end may wear out due to continuous use. Fortunately, it can be replaced.
    • The hot end is located in the print head, which includes the direct extruder, heating element, and nozzle. If you suspect issues with the hot end, consider replacing it.
  4. Leveling Issues:

    • If you’re facing mechanical problems, check the Z-axis V-shaped pulleys. Power on your Anycubic Kobra 2 and raise the Z-axis to the middle height to ensure proper leveling.

An exploded view of the components of a fiber laser cutting head.

IMG Source: gstatic.com

Maintaining Thermistor on Anycubic Kobra 2 Plus

To maintain the thermistor on your Anycubic Kobra 2 Plus, follow these steps:

  1. Inspect and Clean: Regularly check the thermistor for any dirt, debris, or residue. Use a soft brush or compressed air to clean it gently.

  2. Check Connections: Ensure that the thermistor wires are securely connected to the control board. Loose connections can lead to inaccurate temperature readings.

  3. Calibration: If you notice temperature fluctuations or inaccuracies, consider calibrating the thermistor. Follow the manufacturer’s guidelines for calibration procedures.

  4. Replacement: If the thermistor is damaged or malfunctioning, you may need to replace it. Anycubic provides detailed instructions on how to replace the hot end, which includes the thermistor. Make sure to turn off the printer and unplug it before attempting any replacements.

A photo of a blue metal hotend with four brass nozzles and silicone sock.

IMG Source: media-amazon.com

Enhancing Anycubic Kobra 2 Plus 3D Printer Capabilities

Let’s explore how you can enhance the capabilities of your Anycubic Kobra 2 Plus 3D printer, specifically focusing on the nozzle and thermistor. Here are some steps and considerations:

  1. Nozzle Cleaning and Maintenance:

    • Regularly clean your nozzle to prevent clogs and ensure smooth filament flow. Clogged nozzles can lead to poor print quality.
    • Three effective methods for cleaning a 3D printer nozzle are:
      • Cold Pull Method: Heat the nozzle, then cool it down and pull out the filament. Repeat this process to remove any residue.
      • Atomic Pull (or Hot Pull) Method: Heat the nozzle, insert a filament, and then quickly cool it down. Pull out the filament to clean the nozzle.
      • Chemical Cleaning: Use specialized nozzle cleaning filament or a cleaning needle to remove any blockages.
  2. Nozzle Replacement:

    • If your current nozzle is damaged or worn out, consider replacing it with a new one.
    • Anycubic Kobra 2 Plus uses an exclusive nozzle size, which means third-party nozzles may not fit properly. Ensure you get a compatible replacement nozzle from Anycubic.
  3. Printing Speed and Acceleration:

    • The Kobra 2 Plus boasts impressive printing speed and acceleration capabilities.
    • It can reach a maximum speed of 500 mm/s and an acceleration of 10,000 mm/s². This significantly improves printing efficiency compared to the older Kobra Plus, which could only go up to 180 mm/s.
  4. Thermistor Calibration:

    • Accurate temperature readings are crucial for successful 3D printing.
    • Calibrate your thermistor to ensure it accurately reflects the actual hotend temperature.
    • Follow the manufacturer’s guidelines for thermistor calibration or use a reliable temperature calibration tool.

The image shows the components of a 3D printer hotend.

IMG Source: alicdn.com

In conclusion, the Anycubic Kobra 2 Plus Nozzle and Thermistor are key components that require attention and maintenance to achieve consistent and high-quality 3D prints. By understanding how to clean, replace, and calibrate these elements, you can overcome common issues and optimize the performance of your 3D printer. Whether it’s ensuring proper nozzle functionality or fine-tuning thermistor accuracy, taking care of these components is essential for achieving successful prints.

Remember to follow the outlined steps and considerations to enhance the capabilities of your Anycubic Kobra 2 Plus and embark on a seamless 3D printing journey.


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