SaferProducts incident

Failure type

Overheating

Incident narrative

SaferProducts.gov consumer incident report 20241104-0CB98-2147335556. Severity: No Incident, No Injury. Product: Qidi Plus 4 (Qidi Tech Plus 4 3D printer, gray/silver in color). Incident: In September of '24 I bought a Qidi Tech Plus 4 3 D printer. This printer is capable of printing high-temperature materials such as Nylon, Polycarbonate, ASA, ABS, etc. In order to successfully print those materials the printer relies on a closed environment-achieved by a removable glass top and a glass door as well as a chamber heater. This heater circulates warm/hot air throughout the build chamber of the printer and maintains a fairly consistent temperature for the duration of the print cycle, which can vary in duration. Depending upon the size of the model being printed the print time can be 30 minutes to 24 hours or so. This chamber heater is controlled by an SSR which is located on the inside rear of the machine. This SSR is not suited for our 110v system and in many cases is overheating to the point of turning the coils black and making it smoke. As a remedy, Qidi has offered replacement SSRs for the affected machines. This option is not acceptable as it requires the consumer to either pay someone else to replace the defective unit or do it themselves. This exposes the consumer to risk of electrical shock if they are not knowledgeable in this type of repair work. Qidi needs to recall and/or replace the affected machines. The SSR in my Plus 4 unit has blackened coils and another part on the SSR shows signs of getting too hot as it appears to be partially melted.