spring pass, is that a real thing or a habit

people say take a spring pass. i run the same setting again and sometimes it cuts a little and sometimes nothing. am i taking the spring out or just rubbing

If the tool or the work deflected, the second pass cuts what the first left. If nothing was deflecting, the second pass rubs. On your Logan, a light finishing cut often needs it. A heavy roughing cut that already made a curl usually doesn't. Watch the chip. No chip, you're rubbing. Stop.

second pass made a whisper of a chip on the finish and nothing on the rough. ill stop calling both of them the same thing