Howdy y’all I just want to show off my case annealer machine I’ve made at home. It works great!
It uses a cpu liquid cooler to cool the custom work coil (1/4” copper). Uses an old pc power supply to run the timer, thermometer, and controls. The timer does to the nearest 0.1 second and switches a 48 volt power supply that powers the Amazon Zvs oscillator. (The 48v supply is adjusted to minimum, it’s about 40v). I made a tray with trapdoor to locate the work piece and drop it into a bucket or whatever. The tray height can be adjusted for cartridge length.
I’ve made a new coil that is one fewer turns that the one presently installed in order to keep the annealed area at the shoulder. The infrared thermometer has an adjustable emissivity value I’ve tried to calibrate it to read about 1000F when the piece begins to glow. It takes about 4 seconds per cartridge to anneal and the timer does a good job at consistency from case to case and the machine stays cool.
Parts:
ZVS oscillator: https://www.amazon.ca/dp/B01DOWCON6?ref=ppx_yo2ov_dt_b_fed_asin_title
48v supply: meanwell rsw-1000-48 i got second hand. A 24v supply would probably work ok.
Timer https://www.amazon.ca/dp/B07H7L9W3T?ref=ppx_yo2ov_dt_b_fed_asin_title
used computer case and power supply and cooler. A small 120mm cooler would be entirely sufficient.
I recommend omitting the thermometer, it's kinda useless and expensive.
I’m happy to share any info to help you make your own.
video of it working on 7mm rem mag test case. This case is heated in excess of annealing to see the glow. CGN post doesn’t seem to support video so link to Dropbox.
https://www.dropbox.com/scl/fo/o3vw...ey=6h0be3xhmx6ga0ozjhran8qyj&st=txgchcyf&dl=0
Also "
" this how to make the work coil. not my content.
It uses a cpu liquid cooler to cool the custom work coil (1/4” copper). Uses an old pc power supply to run the timer, thermometer, and controls. The timer does to the nearest 0.1 second and switches a 48 volt power supply that powers the Amazon Zvs oscillator. (The 48v supply is adjusted to minimum, it’s about 40v). I made a tray with trapdoor to locate the work piece and drop it into a bucket or whatever. The tray height can be adjusted for cartridge length.
I’ve made a new coil that is one fewer turns that the one presently installed in order to keep the annealed area at the shoulder. The infrared thermometer has an adjustable emissivity value I’ve tried to calibrate it to read about 1000F when the piece begins to glow. It takes about 4 seconds per cartridge to anneal and the timer does a good job at consistency from case to case and the machine stays cool.
Parts:
ZVS oscillator: https://www.amazon.ca/dp/B01DOWCON6?ref=ppx_yo2ov_dt_b_fed_asin_title
48v supply: meanwell rsw-1000-48 i got second hand. A 24v supply would probably work ok.
Timer https://www.amazon.ca/dp/B07H7L9W3T?ref=ppx_yo2ov_dt_b_fed_asin_title
used computer case and power supply and cooler. A small 120mm cooler would be entirely sufficient.
I recommend omitting the thermometer, it's kinda useless and expensive.
I’m happy to share any info to help you make your own.
video of it working on 7mm rem mag test case. This case is heated in excess of annealing to see the glow. CGN post doesn’t seem to support video so link to Dropbox.
https://www.dropbox.com/scl/fo/o3vw...ey=6h0be3xhmx6ga0ozjhran8qyj&st=txgchcyf&dl=0
Also "
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