Annealing brass with a drill is a method that some reloaders use to heat treat brass casings. While it may not provide the same level of precision and control as specialized annealing machines, it can still be effective if done correctly. Here is a step-by-step guide on how to anneal brass with a drill:

Materials and Tools Needed:

Brass casings
Drill
Propane torch
Heat-resistant surface or tray
Water or heat-resistant oil (optional)
Safety glasses and gloves
Step 1: Prepare the Work Area

Find a well-ventilated area to work in, preferably outdoors or in a well-ventilated garage.
Place a heat-resistant surface or tray on a stable surface to catch any debris or hot brass casings.
Step 2: Secure the Drill

Attach a socket or a specialized brass annealing adapter to the drill chuck. This will hold the brass casing during the annealing process.
Step 3: Heat the Brass Casings

Put on safety glasses and gloves for protection.
Hold the brass casing with the drill chuck or adapter, ensuring it is securely held.
Use a propane torch to heat the neck of the brass casing evenly. Move the flame in a circular motion around the neck to distribute the heat evenly.
Heat the brass casing until it reaches a dull red color. This indicates that the brass has reached the annealing temperature.
Step 4: Cooling the Brass Casings

Once the brass casing reaches the desired temperature, remove it from the flame.
Allow the brass casing to cool slowly. You can either let it air cool or quench it in water or heat-resistant oil to speed up the cooling process. Note that quenching may result in a harder neck, so air cooling is generally recommended.
Step 5: Inspect and Repeat

After the brass casing has cooled, inspect it for any signs of overheating or damage. Look for discoloration or warping.
If the brass casing appears to be annealed properly, proceed with the next casing. If not, adjust the heating time or technique accordingly and repeat the process.
Important Tips:

Practice proper safety precautions when working with high temperatures and open flames.
Ensure that the brass casings are clean and free from any debris or contaminants before annealing.
Maintain a consistent heating time and temperature for each brass casing to achieve uniform results.
Keep in mind that annealing brass with a drill may not provide the same level of precision and consistency as specialized annealing machines.