Hot End repair holder

cults3d

This holder makes working on your hot end easier. If your hot end is clogged for instance, you can remove it from your printer to make it accessible again. However, it’s not very practical to heat up the hot end with cables still attached to the printer. To make the hot end more accessible I designed the “Hot End repair holder”. Now you can remove your hot end from your printer and place it into the “Hot End repair holder”. This holder also features an option for heating your hot end, allowing you to work on it in a hot state. This will come in handy for unclogging or assembly of your hot end. The temperature of the hot end is controlled by an Arduino Nano. You can connect the NTC of the hot end to it and set a maximum temperature in the Arduino sketch that comes with the files. See the picture of the screen where to set the maximum temperature in the sketch. If the Arduino is connected to a computer, you can view the measured temperature in the serial monitor. The Arduino also has an option to take its power from USB. If everything works as expected, you don't need the computer anymore and there's an option to provide power to the Arduino from the 12V that powers the heater of the hot end. See the schematic for more details. The heater of the hot end is powered by a 12V ATX power supply from an old computer and a FET. This FET is triggered by an optocoupler, which is triggered by pin13 of the Arduino. See the schematic for further details. The Arduino Nano is somewhat hidden in the pictures because my DIY PCB for the heater circuit is positioned in front of it. In addition to the electronic components, you'll also need 2X M3x10mm and nuts. If you use the small bracket to hold the Arduino in place, you'll also require a little "wood-like" screw.