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that looks so cool
can you list those parts?
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Sure.
Power Supply is just a generic 24V, 360W power supply. You can use anything in that range, and the induction board can take up to 1000W. At 360W I've found it doesn't need any cooling, but time will tell as I run higher volume through it. I've just been playing with it mostly thus far.
Similar PS on Amazon (mine was a different generic albeit it looks the same...mine was $18):
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Next is the induction board. Purchased on Amazon. Scrap the coil that comes with it, it is MUCH too large for what we do.
$19 on Amazon:
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Timer Relay. This can be one of a billion solutions, but you want a way to fire the induction unit that is consistent and accurate. This board lets you program 3 relays for a particular amount of time, and can have one fire after the other, in concurrence, etc. You could easily use a second relay to actuate a solenoid attached to a trap door, for instance. That was my plan originally but with me wanting to fully automate it, this isn't flexible enough for me, but I already have it, so might as well have some fun with it.
$13 on Amazon:
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You need a way to start the induction coil and start the timer. The relay board has a simple trigger circuit, that once the circuit is closed, it triggers the relay, turning on the induction coil. You can do any toggle switch (as long as you flip it back right away), light switch, or any momentary on switch. This is just a small bulk pack from Amazon.
$7 on Amazon (for 5x):
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Lastly, you need a way to make the new coil that is properly sized for annealing brass. For 223, 300 BLK, or similar diameter cases, you want a coil round aboutish 16mm ID. It doesn't have to be exact, but in that ballpark. I used a 16650 battery and wrapped the wire around that...you could also use a dowel rod, etc. The coil is made out of 8 AWG solid copper wire. I bought a
25 ft. roll at HD for $12.
Then just program the relay board. I have read conflicting information online, but I'm aiming for 850 degrees at the shoulder, maybe a hair over that, but want to make sure it doesn't get above 750 degrees past about 1/4 of the way to the head from the shoulder. I'm using 850 degree Tempilaq and found that with 300 BLK, I'm somewhere around the 4 to 4.5 second mark to achieve this.
Load a case, push a button, 5 seconds later, it's perfectly annealed, and you can move on to the next piece. Only thing you use is electricity, no real consumables, adjusting the flame, repeatability concerns, etc etc etc.
I'm going to fully automate it with an Arduino. I'm still getting parts in, and still teaching myself about C++ coding, but it seems pretty simple once you get the basics down. My wife already told me she is getting me a 3D printer for Christmas so I'll make a nice fancy case for it all this year in time to print it on 12/25.