Jim, I realized tonight the difference between straight-in stabbing tools that you list, and the tools I'm using, which I will call 'roll-stamping'. The tools are pushed into the wood with hand pressure and then rocked along the path. Each plunge 'n rock moves a larger tool along the path about 1/16", and the smaller tools might only travel 1/32 at the most. I'll post some illustrative photos when I make them.