Geez - just the thought it of doing that one piece a time - all the loading on the sled - clamping down -running them through the shaper - unclamping - end for ending - doing it again - 188 times. Too manyyyyyyyyyy .
All these being 3/4" thick x 4-1/2" wide (+ 1/2" for finish dimensioning) red birch - most in the 6" to 10" length but some as short as 3-1/8" and some as long as 18" made me realize I had to try something.
Having recently acquired an old 1/4 hp power feeder from Sawmill Creeker, Larry Edgerton - this, a very generous GIFT from Larry - Thank you very - very much Larry - the little light bulb in my head turned on. The power feeder had made the running of the stiles so safe and accurate and fast that I decided it was worth doing a test run (or 3) of setting up a sled to hold 4 rails at a time and power feed those past the shaper cutter.
Worked beautifully!
Of course I still needed to run it all through 47 times but I managed all the parts from 1:30 in the afternoon to before 5PM including a 20 minute coffee break. Most importantly all the variables (and inevitable inaccuracy) of doing this one at a time, fed by hand, was eliminated.
Just sharing for anyone else contemplating a big run of cabinet door rails.
Still shots available if anyone is interested. A bit boring but perhaps informative.
Cheers, Sam