Why brad awls?
You could make them from small screwdrivers in about 5 minutes apiece.
I have never needed them though.
I prefer a birdcage awl. The hollow ground reamer blades literally fall into wood.
One was made from a screwdriver of course, and the other a 1/4" chisel.
Grinding the 4 hollow tapers is kind of a trick (use a small grinder, 5" is ideal)
but its self explanatory once you start.
If you use something of a modern screwdriver they are all made of A2, air hardening steel. (even the Chinese cheapies), so you don't even have to worry about ruining the temper.
yours Scott
PS use a bottle cork on the tip if you are storing them loose. Saves the tip, and your skin too.