DIY Brass Induction Annealer

While surfing reloading forums and sub-reddits, you’ll encounter a few different ways to anneal brass.  Annealing is the process of heating a material to set temperature for a set amount of time and then allowing it to cool back to room temperature in order to improve ductility and reduce brittleness.  Essentially, if properly annealed, the resizing process of reloading will cause less strain on the cartridge and improve its usable life. I didn’t have much interest in annealing until I stumbled upon the induction method.  You can quickly heat the brass in a very controlled and repeatable manner using eddy currents.

Disclaimer –
This is an ongoing project that was started before the creation of this website. I’m in the process of working backwards to recreate the documentation, but there may be gaps present


Current Status: Work in Progress

- Needs coil with much tighter radius.
- Water reservoir to help bleed trapped air in cooling system.

3MF and Python Files

3MF and Python Files are available for download on my GitHub page below.

https://github.com/DeW-Z/Induction-Brass-Annealer

Bill of Materials

This is not a comprehensive list of every part. Many of the small fasteners, connectors and misc. pieces are not accounted for in the BOM as they were what I had on hand already.

Part NumberDescriptionQuantity
B09LRB226TM-ATX/ ITX Open Chassis Vertical Overclocking Open Aluminum Frame Chassis1
B07WFPM3LN12V-48V ZVS Induction Heating Board Module,1800W 40A Induction Heating Board1
B08PTXFDP6OOLING FROSTFLOW X 240 Snow CPU Water Cooler1
B01D8FMLDMDC12V 1A~30A Switching Power Supply Device1
S-600-48DC48V 12.5A 600W DC Switching Power1
UnknownSSR-40 DD 40A DC 3-32V to DC 5-60V1
41113600Voltage and Ammeter 0.39″ LED Voltage Current Display DC 4.5-100V1
B082YL4PNHInsulation Braid Sleeving, 16.4Ft-5mm High TEMP Fiberglass Sleeve White1
‎MP-T003-04-068Dual Row 600V 25A Screw Terminal Strip Blocks1
PS615143Wire Appliance and Power Tool Cord, 6 ft, 14 AWG, 15A/125V AC1
HD040RPi GPIO Status LED & Terminal Block Breakout Board1
JF-0530BDC 12V Push Pull Type Frame Electromagnet2
ANMBEST_MD314-319Relay Module with Optocoupler High/Low Level Trigger1
Raspberry Pi 3/4 or Zero (Best of luck)1

CAD Drawings


Assembly


09.03.2022

Here’s a short video of the first trial run.

Show 84 Comments

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