Steve we are talking rough stock, are you telling me you joint and finish plane to thickness first then rip to width after.
Warren, it doesn't matter much to the ripping operation whether it's planed first or not. I do it after because as Rod said, no point in milling the firewood. For cabinet face frame parts which is what we're talking about here, it only matters that they have one nice clean face. Tolerances of +/- 1/8" thickness would probably be unnoticeable to 99% of the customers, and they wouldn't want to pay extra for over processed face frame stock. To that end, just plane it, don't face joint, and you'll end up with nice even thickness, which is better than good enough.
Just trying to figure out how you approached ripping rough stock and it doesnt make sense if you say you rip it on the slider then go and joint and plane after then you would have to re rip edges again as they would not be square. IM not getting it but dont worry about it, most of this is six of half dozen of the other. I like all the material straight and flat tension out, face frames door rails styles whatever.
Gotta disagree with Steve on that face frame thing. I've seen it done both ways. Moulder operater runs the stock then walks around doing nothing but yak about how fast he got it all done. AND noting that it's taking the bench guy too long
to make the face frames. Surprising how many shop owners allow that stuff. A knowledgable business owner would let that moulder guy make a few face frames ,yak about how tuff it is too make face frames with crooked ,twisted ,bowed
material. Then tell him "it's a lot easier and faster with properly run material".
I have a carbide blade on my table saw. I rip a 1/8" off the board to straiten and edge and then rip to width.