. Hotend Upgrade

• Current Limitations: The stock Anycubic Kobra likely has a hotend limited to around 260°C.
• Solution: Replace the stock hotend with a high-temperature capable option. Popular choices include:
  • E3D V6: A widely used and well-supported hotend with various nozzle options. You'll need to purchase a heater cartridge and thermistor suitable for higher temperatures.
  • Bimetallics Volcano: Known for excellent heat dissipation and the ability to handle high temperatures.
  • Dragon Hotend: Another high-performance option with good heat break design.

2. Heater Cartridge Upgrade

• Requirement: The stock heater cartridge may not have sufficient wattage to reach 290°C reliably.
• Solution: Replace it with a higher wattage cartridge designed for the chosen hotend.

3. Thermistor Upgrade

• Requirement: The stock thermistor might not be accurate at higher temperatures.
• Solution: Install a high-temperature thermistor compatible with your chosen hotend and motherboard.

4. Motherboard Considerations

• Check Firmware Limits: Ensure your Kobra's motherboard firmware allows for temperature settings up to 290°C. You might need to modify the firmware or install custom firmware (like Marlin) to adjust temperature limits.
• Power Supply: Verify your power supply can handle the increased power draw from the upgraded heater.

5. Cooling Fan Upgrades

• Importance: Adequate cooling is crucial for high-temperature printing. Consider upgrading to:
  • Part Cooling Fan: A dedicated fan to cool the printed part as it exits the nozzle.
  • Hotend Fan: Ensure sufficient airflow around the hotend to prevent overheating.

6. Filament Considerations

• High-Temperature Filaments: Use filaments specifically designed for high-temperature printing, such as:
  • PC (Polycarbonate): Requires temperatures around 290°C.
  • PEI (Polyetherimide): Also requires high temperatures.

Important Notes:

• Safety First: Always prioritize safety. Wear appropriate safety gear (heat-resistant gloves, safety glasses) when working with hot components.
• Research Thoroughly: Research the specific hotend and components you choose.
• Seek Expert Advice: If you're not comfortable with electronics or 3D printer modifications, consult with an experienced 3D printing enthusiast or technician.

Disclaimer: Upgrading your 3D printer can involve risks. Proceed with caution and ensure you understand the potential implications of any modifications.