|Forum topic by TysonK||posted 02-26-2015 04:39 PM||844 views||0 times favorited||7 replies|
02-26-2015 04:39 PM
I’ve built this type of thing from plywood, but it’s well past time to get over my fear of using real hardwoods and learn to cut some dovetails as well. It’s a fairly simple design, dovetail and through-mortise joinery for the box, and for the back panel I planned to do a large mortise as well, but looking online this type of back is often done with ship lapped boards. Now I’m not sure what is the best approach.
My goal is to not use plywood on this project or that would be a simple answer, but I haven’t found a clear answer to why/ when you’d use ship lap. I’ve read it helps with the seasonal wood movement, it’s a traditional approach and it’s a way to preserve expensive wood and use less expensive boards that won’t be seen.
I already have the cherry boards for this project and the back of this box will be seen, so my primary concern is wood movement. Will it really make a lot of difference or can I simply use a solid back as planned? (See images)
Any advice on wood movement in general is welcome, I hear sometimes talk about seasonal movement as though it’s a time bomb waiting to build massive stresses in your project that will one day explode the whole thing… Or at least put some big cracks in it and this is just one of those areas I don’t understand.
-- -- Tyson