Boards, again.

Bob's tutorial on prepping one's own floor boards:

Just because a board is milled straight, doesn't mean it dries straight.  When you encounter a board with a wavy edge, you need to give it a straight cut. 

1. Snap a blue chalk line along one edge. 

2.  Using a circular saw, cut along chalk line.

3.  Run board through table saw.

 4.  Now, plane the board smooth.

Voila!  5 years later, you have enough floor boards for your new log house!