I'm new here so this subject may have been discussed a million times, but hey, I'll open the door again. No doubt there are plenty of ways to true up a piece of wood or at least create a flat surface.
Over the past plenty of years I've built a number of bridges for my router to ride on, cutter down, where I wanted to create a perfectly smooth and flat surface to begin work with. Mill one surface and then turn it over and mill the other side to either just a parallel surface or to a specific thickness dimension. This has worked great for me where I have layered up a number of different woods (mostly scraps) for bowl blanks, jewelry boxes, and just to make usable wood rather than burn it.
Just another way to use the router. Questions? Just ask.
Over the past plenty of years I've built a number of bridges for my router to ride on, cutter down, where I wanted to create a perfectly smooth and flat surface to begin work with. Mill one surface and then turn it over and mill the other side to either just a parallel surface or to a specific thickness dimension. This has worked great for me where I have layered up a number of different woods (mostly scraps) for bowl blanks, jewelry boxes, and just to make usable wood rather than burn it.
Just another way to use the router. Questions? Just ask.