Dustin Brown
11-04-2012, 8:31 PM
So I got my shop all setup and decided to do a few tests runs on everything. I took a piece of 1x8 pine and jointed the face flat, then the edge, then on to the planer and tablesaw. I ended up with a perfectly flat square board without any issues.
Then I decided to do a rough cut curly maple board 3/4"x8"x26". I started with the flattest side and proceeded to make very light passes to save as much material as possible. As I progressed and started getting the face close to flat I noticed the last 6" or so just wasn't leveling off with the rest of the board. This is where it gets weird for me. The face I'm jointing is almost flat except for the last 6" which bows upward very slightly about 1/16-1/32. When I flip the board over I would expect to see the board cup slightly right? Nope, now the last 6" or so bows upward at least 1/16". The board is almost the same thickness all the way down so that's not it.
Any ideas what is going on? I'm completely lost on this. Something about heavily figured maple I don't know?
Then I decided to do a rough cut curly maple board 3/4"x8"x26". I started with the flattest side and proceeded to make very light passes to save as much material as possible. As I progressed and started getting the face close to flat I noticed the last 6" or so just wasn't leveling off with the rest of the board. This is where it gets weird for me. The face I'm jointing is almost flat except for the last 6" which bows upward very slightly about 1/16-1/32. When I flip the board over I would expect to see the board cup slightly right? Nope, now the last 6" or so bows upward at least 1/16". The board is almost the same thickness all the way down so that's not it.
Any ideas what is going on? I'm completely lost on this. Something about heavily figured maple I don't know?