I’m building walnut plank countertops using 7/8” stock that is between 4 & 6 inches wide and up to 8 ft long, using the method of flipping cutoffs under to build up the edges. I have an L shape piece to build and have some questions. The long side of the L is 12 feet and the short side 5, against the wall. My questions are:
1. regarding planning for movement and building the L in two pieces; should i make the long piece 12 feet and the short 3 feet, or the other way around making 10 and 5’ pieces? i’m thinking 12 and 3 as this would result in the movement of the longer piece pushing/pulling seasonally on the smaller piece. thoughts?
2. regarding piecing a wood countertop together, like a wood floor, what is the best way to ensure that each board in each row of pieces is exactly the same width, as i’m assuming this will be critical in a glue up to avoid gaps. I’m planning to do the glue up with biscuits
3. using biscuits, would i join the edge grain and the end grain, or just the edge grain?
4. is it just plain stupid to build it this way verses finding full length boards instead? i’m not opposed to this but am finding it difficult to get usable 12’ pieces of walnut.
5. the long section of the L will have an under-mount sink attached, do you see this as an issue as there will only be a narrow section of wood an inch thick and a few inches wide in front of and behind the sink. I’ve never done this before and it doesn’t seem like much, maybe i’m worried for nothing.
thanks in advance for any insight you are willing to share.