Excellent video ,demo and explanation. I am totally new at this. Somewhat intimidated (well actually more then somewhat ) but your video has giving me more confidence.Knowing how the rollers and cutter works during the planing. Thank you again !!!!

This vid should be mandatory viewing for all us poor noobs with their first thicknesses purchase. Many thanks.

Great video, thank you.

Why do use boards with no twist and 95% flat on your vid’s . Could you use a board with a twist and Cupped to demonstrate? Thanks

This is great, thank you! I'm less than a year into this new hobby, and I always find it helpful to have a mental model of what's happening that lets me predict what's safe and what isn't. Your cardboard prop is perfect. :) Quick(ish) note about friction: one thing I remember from my physics classes is that friction is almost always *lower* between two objects that are moving relative to each other. (Look up "coefficient of friction" and keep an eye out for the terms "static" and "dynamic".) I don't think the calculations matter for the purposes of your explanation, but the difference means that the roller starts out pushing forward using the coefficient of *static* frction... but as soon as the cutting head starts to push the board backwards even a tiny bit harder than the roller can push it forward, the roller starts to slide relative to the wood, which means it starts to use the lower coefficient of *kinetic* friction. Just like that, suddenly the cutting head is pushing backwards a LOT harder than the roller, and out comes the board. This is the same reason a lot of cars have ABS: a skidding tire loses its grip, so the computer steps in and cuts the brakes to that tire to let it "catch up" to the road again, faster than a human can react, to stop the car faster than it would if it just laid down a long patch of rubber.

Keep the planer bed waxed