Originally Posted by
John TenEyck
4/4 must be a minimum of 1" thick after drying, and so on with thicker increments. I cut 4/4 on my bandsaw mill at 1-1/8" and it's always well over 1" after drying. Commercial mills cut it closer, I'm sure.
Skip planed can be anything the mill decides to make it. I like skip planed lumber because I get to see some of the grain and it also saves me some work to flaten/thickness it. The skip planed 4/4 I buy typically is 15/16" thick and that allows me to get 13/16" out of it, sometimes a little more if I'd like.
I pick my own boards so anything with cup, twist, etc. doesn't go on my cart. That maximizes yield when I work it.
If your supplier doesn't have flat skip planed lumber, buy rough sawn or go elsewhere.
John