How to make Timer Module for Spot Welder at Home

How to Build a Timer Module for Spot Welder at Home Parts that you need Circuit boards PCB, principles : https://goo.gl/jWJdYG BTA16-600B TO220 HEF4093, 3v Led 3 * Resistor1K 1/4W 1 * Resistor 390K 1/4W 2 * Resistor 330R 1/4W 2 * Resistor 4K7 1/4W 1 * Resistor 680R 1/4W 1* Resistor 100R 1/4W 1* MOC3041 2 * C1815 1 Potentiometer 10K Capacitor 220uF/50V Capacitor 1uF/50V Capacitor 100uF/25V Capacitor 224/250V Copper clad board FeCl3 Thanks for watching, Have a great day !