BACKGROUD
Recently, we received feedback from a small number of users reporting that the print head (the hotend) on their Kobra 3 printers were experiencing leakage issues, which can lead to print failures. Upon receiving this feedback, our technical team immediately launched a thorough investigation, conducting technical analysis and verification of the reported issues to quickly identify the problem and provide solutions to address the cases.
SOLUTION
After several rounds of testing, we found that the leakage was due to the hotend throat component in a few units not meeting our airtightness standards. The issue was traced to the quality of a specific adhesive, and we've ruled out problems with design, materials, or manufacturing.
Upon identifying the issue, we immediately stopped using the affected adhesive batch and re-inspected all products from that batch to ensure they meet our quality standards.
For all customers who have purchased and received the Kobra 3 and Kobra 3 Combo, we offer the following solutions:
If your device has experienced filament leakage at the hotend, please see the images below for reference.
Please submit a ticket to request a new hotend, and we will send you a brand new quick-release hotend at no cost.
We’ve also extended the warranty for the quick-release hotend from three months to six months. The replacement process is simple and can be done easily, ensuring your printer remains in good working order. In order to process the application quickly, we may require the following information:
- Photos and videos of the hotend with the leaking issue.
- Your order information.
- The shipping address.
The quick-release hotend assembly will be shipped within 14 business days upon receiving your application. We'll also provide a video guide to help you replace the hotend. If you have any trouble with the installation, we are willing to offer you alternative solutions.
We sincerely apologize for any inconvenience this issue has caused. Delivering high-quality 3D printers and a great user experience is our responsibility. We will further strengthen our quality control processes and hold our suppliers to higher standards.
If you have any questions or concerns, please feel free to contact us at the Support Center.
FAQ
Q: How can I determine if my Kobra 3 printer has a print head (hotend) leakage issue?
A: If molten filament leaks from between the heating block and the throat tube after the hotend is clogged, it indicates a leakage issue. Please refer to the images shown below.
| Comparison | Leaking hotend | Normal hotend |
|---|---|---|
| Hotend Images | |
 |
Q: I don't know how to replace it myself. What should I do?
A: When you have completed the hotend apply form through this link, we will provide you with a video guide on how to replace the quick-release hot end. You can follow the video for the replacement. If you encounter any issues during the replacement process, you can still contact our service support team for further assistance.
Q: Will replacing the quick-release hotend affect the warranty of the entire printer?
A: The warranty period for the quick-release hotend has been upgraded to six months. The entire printer has a warranty period of one year.
Q: What should I do if my shipping address has changed?
A: You can update your delivery address when submitting the hotend apply form.
Q: Can I get a free replacement of the quick-release hot end if my printer has a clogged nozzle?
A: A clogged nozzle is not considered part of this issue. However, if you encounter the clogged nozzle or any other print head issues, You can reach out to our official support website.
Q: What should I do if my Kobra 3 has other product experience issues?
A: You can contact our service support team through our official support website to receive further assistance.
Q: I purchased the printer from a distributor. Can I still receive the replacement parts?
A: We have provided some hotend parts to authorized distributors. Please contact your original purchase channel to obtain the parts.
Anycubic Team