Hotend insulation with Loctite 5926

thingiverse

To maintain optimal printing conditions, proper ventilation is crucial when creating intricate projects with a J-Head. However, directly blowing air onto the head can cause excessive cooling. Following advice received, I insulated the hotend tip using blue silicone liquid seal, which can withstand temperatures up to 250°C. Applying a generous layer of silicone (approximately 3mm thick) around the hot tip, covering both the thermistor and heating element, is essential for effective insulation. After allowing at least 24 hours for the silicone to dry, use a cutter to trim away excess material from the very tip, ensuring no insulation remains below the extrusion point. This will result in a well-insulated hotend that requires PID parameter recalibration due to the insulation's impact on temperature control. Utilize the gcode command "M303 S197 C8" as described in the RepRap wiki for PID tuning, and remember to update your config.h file with new PID constants.