Frankly, I found the chart hard to read -- I would have organized the columns a bit different, starting with rough, then to s-green, then s-dry, then metric. But, I got the chart from a Canadian wood supplier, so I guess they thought the metric was more important. Even in that case, I would have flipped columns 3 and 4, ending up with rough. It seems a little odd to have the rough sizes in between the two surfaced sizes.
But, the chart had the best information I could find, so I did a screen capture, saved it as a .jpg, popped it up to my web server, and linked to it in the message.
I learned something out of it -- I was all set to tell you that the difference between rough and finished sizes was all due to dressing, and shrinkage had nothing to do with it. But, before I stuck my neck out, I did a Google search, and guess what! I discovered you were right, shrinkage is part of it if the lumber is dressed while green! I never knew that.
So, I guess we make a good team. I caught your (minor) error, and you taught me something I didn't know.
