hautions11 said:
Great pics Woodshop! That oak looks fantastic and I second the go buy a lottery ticket. When you are milling stock to finish to 3/4 inch, are you milling 5/4 or 4/4? I am not sure how much extra I should leave on my Ash milling project. The wood I bought out of the sawmill was ussually around an inch and almost always cleaned up in the planer. With the CSM, do I need to leave a little extra, like 5/4? What is everyones experience?
My experience milling for 3/4 inch S2S dimension lumber has given me mixed results between milling full 5/4, milling 1 1/8, and even milling just 4/4. My conclusion is that it depends on the wood itself. Example, with most CLEAR stuff, especially if its quartersawn or riftsawn, no defects or very few small knots, if I am careful drying it, I can get away with 1 1/8 to start. Thats with oak, walnut, ash, poplar... stable stuff like that. Pecan or hickory, sweetgum, black gum, cherry, apple to name a few... they tend to move more when air drying thinner stuff, and so I mill them full 5/4. If the boards have lots of knots, or have some defects or figure, then I go 5/4 no matter what. White pine, white cedar, redcedar, some poplar and clear quartersawn oak I have milled only 4/4 and gotten 3/4 inch boards. That's always a crapshoot though. SO... conclusion is I almost always mill 1 1/8 to get 3/4 unless the boards are lesser grade, then I do 5/4.
This is with my Ripsaw (bandsaw)... I can't really say what you would need to start with if you're doing it all with a csm, because I just havn't done enough that way to know. I will say that even my best smoothest board surface from my csm is not as smooth (read needs more planing) as the bandsawn surface. I can only assume that I would need a bit more thickness if both sides of the rough board were from csm. Than again, some of you are experimenting with some better (read smoother surface?) ripping chain, which may be as good as a bandsawn surface. Would be interesting to have a gtg and mill same log with different chains and ripsaw, and then compare right there on the spot.