Please refer to the video for instructions : https://youtu.be/GcW0If6udEY Parts List: 1xSTC-1000 (Digital Temperature Controller) : https://s.click.aliexpress.com/e/_DBajNad 1xPTC Heater (12v 200w) : https://s.click.aliexpress.com/e/_DkmW3E5 Silicone Wire(18AWG) : https://s.click.aliexpress.com/e/_De9HYtr 2x50x50x20 Cooling Fan(12v Dual Ball) : https://s.click.aliexpress.com/e/_DECAI2Z 2xFan Guard(5cm) : https://s.click.aliexpress.com/e/_DlUtOet 1x16/20A Switch(4PIN On-Off) : https://s.click.aliexpress.com/e/_Dmudvw5 1x30A Relay : https://s.click.aliexpress.com/e/_DeElrNb Tubular Terminal : https://s.click.aliexpress.com/e/_Dl4mZp7 Box Insulated Wire Connector : https://s.click.aliexpress.com/e/_DldST6V Crimping Pliers : https://s.click.aliexpress.com/e/_DEvtIvf Heat Shrink Tubing : https://s.click.aliexpress.com/e/_DBmQ9nJ M3 or M4 Bolt & Nut Set : https://s.click.aliexpress.com/e/_DnKmzCZ Quick Splice Connector : https://s.click.aliexpress.com/e/_DE4B4DJ Waterproof Wire Connectors : https://s.click.aliexpress.com/e/_DBdw3GZ In the meantime: Happy making! Please post your makes builds.