Trying to improve my sanding technique...
Festool Rotex 5", with a new pad, a new piece of Granat P120 paper, Festool dust extractor...
Piece of walnut, fresh from the planer (which has sharp knives and leaves a nice surface, to being with)
Set the sander to ROS mode (not rotary mode), turn the vacuum suction way down, lightly place the sander on the work, let the weight of the sander do the work (no pressing down). For this board, which is ~6"x8", I spend maybe 30 seconds sanding, until there is a uniform scratch pattern all over.
Wipe some BLO on, and there are little spiral marks visible.
I just don't get it. For the last several projects, I've taken to hand sanding with P120 paper after the ROS, because at least then, I can get rid of the spiral marks, but it's a HUGE amount of work. It's almost less work to NOT use the ROS, and just hand sand everything!
What am I doing wrong?