Re: Splitting the waste on tenons?????
Charlie
Stock selection for rails, and not using garbage wood, obviously a big deal with this technique.
If you have grain running all sorts of directions, off the sides, etc. on rail stock to be tenoned you have more problems than whether to saw or split out the tenons themselves. In other words, you should be using stock that could be split out if you chose to work that way. Sawing is giving you a false sense of security on a piece of stock that should have been used elsewhere, or not at all.
Save your straight grained stock for stiles and rails. Make a statement with grain in your door panels, drawer fronts, and in other places.