Thanks guys, didn't think there were standard material sizes for aircraft construction - thought there was a very wide range of sizes available, will have to look into it some more.
That's feet if I'm not mistaken? That's a pretty massive machine if it is.
Yes, it's pretty large. Getting ready to start milling a 12' long horizontal stabilizer plug this week (will include skin plus all ribs and spars in one mold) and it will do it all in one setup. But there are a lot larger machines out there (Janicki, etc), mine is just a good size for my shop and for doing development work. I sized it so that for most Part-23 size airplanes I only need to slide the plug once for any large part.