How to control temperature electric furnace kiln - PID & SCR

Electric furnace temperature control for melting metal (aluminum and brass) for lost PLA casting or sand casting
Parts:
Signstek ST300 Dual Channel K/J Type Digital Thermocouple Thermometer -58°F~1022°F(-50~1300°C)
10000W SCR Digital Voltage Regulator Module Board Speed Control Dimmer Thermostat AC 220V 80A
Inkbird F Display PID Temperature Controllers Thermostat Heat Sink and Solid State Relay 100 to 240ACV ITC-106VH 40DA SSR White Heat Sink K Probe
Yeeco + K Type Thermocouple 0~1300℃ Temperature Thermocouple Sensor Temperature detector Temperature Gauge
K Thermocouple Block Ceramic Insulator Kiln Probe 2372 F 11G High Temperature

[@mrtechie6810]

Could you do a video on controlling a heating element in water using a PID -- and efficiency of SSR vs SCR? I have an 8KW Atmor tankless water heater that has two switched heating elements. I want to add stable electronic temperature control. But I can't find good information about the different options! Seems the PID + SSR MAY have longer switching time, and that MAY reduce heating element life from thermal cycling vs a higher speed SCR. But I am having trouble finding the real answer.

[@AlanSNasar]

Good question, however, beyond my expertise!