I made a manual version of a bandsaw power feeder which has the benefit over manufactured versions of a more consistent pressure across the material being cut. It works ok, but is challenging to adjust with the springs. Someone suggested pneumatics would allow easy adjustment and more consistent pressure. I would love to explore that but simply don't know where to begin. I have read the Festo catalogs and some tutorials on pneumatics. Let me explain what I think I'd like to have happen, and if someone wants to pipe in with ideas on my getting better educated I'll be thrilled.