So.... Lock down boredom got the better of me!
Whilst wasting time on Youtube looking at shooting stuff, I found some intereresting home made Induction Annealing systems.
I did some more research and cobbled a system together (see video).
1000W ZVS Induction Heater board
Home wound, water cooled induction coil using 1/8 inch copper tube
Power supply, Timer module, Solid State Relay, Water Pump and Radiator made for cooling PC's.
It works really well..... the video shows a .308 case heated for 7.8 Secs to show speed of heat transfer.
Actual annealing time for a .308 is 4.2 Secs.
The advantage is that the timer is accurate and so annealing is very consistent... and no gas or flames!
With these boards, the power supply must be beefy to kick start the Induction board into resonance.
PXL_20210213_190519307.mp4