Brass screws stripping and snapping, what am I doing wrong?
Brass screws are soft. You can easily twist the heads right off. This means you MUST be careful.


Pre-drill pilot holes for the screws.
Lubricate the screws. I use a stick of beeswax that I keep on hand. Just draw the threads across the stick to get a bit on them. You will be ASTOUNDED how easily a lubed screw drives. Some use soap on screws, which is probably ok for brass. It is bad for steel screws as it can cause them to rust.
Use a drill-driver that will allow you to limit the torque applied to the screw.