Originally Posted by lilmike
Things look fine at 23.5" wide internally.
Let me know how the OSB works for you.
I liked working with it, but finishing it poses a whole new set of challenges.
Cuts are done, baffle is machined, lines are drawn, and I am about to crack open the PL.
So far, this OSB is fantastic. It cut clean and sharp, it is definitely much stiffer even than cheap ply, and I didn't find any voids during my cutting. Not bad at all for $33 a sheet. I'll soon know how it holds screws, but the manufacturer brags quite a bit about that in particular.
It occurred to me to ask if this thing would benefit at all from some fiberglass or something for damping in any key locations. I am afraid I don't know the acoustics of horns, let alone tapped horns, well enough to hazard a guess.
EDIT: One other thing, how important are the windows in the bracing? Are a few big windows better than, say, going to town with a 3 inch hole saw? I worry about turbulence from lots of little holes.. Air whistling over the edges of them and such. Since I assume we are looking for laminar flow of air in our horn, it seems like any windows at all would only save us a little weight, and might cause more turbulence than they are worth. Will I regret it if I skip windows all together?
I'll get some pictures up shortly!Edited by mishaux - 1/12/14 at 4:55pm