But plywood is made out of veneer sheets that have been turned on a giant lathe. There is only a very thin layer of fibers running one way, you can't really see

But plywood is made out of veneer sheets that have been turned on a giant lathe. There is only a very thin layer of fibers running one way, you can't really see growth rings in a layer of ply. CLT layers can be at 2" thick or more, with a very definite grain structure and growth rings. Which makes me wonder how CLT is supposed to behave with wood movement when atmospheric moisture changes. Is it made from a species of softwood with very little movement? Or is the adhesive supposed to be strong enough to withstand the stress under movement? Or has the wood been treated with some industrial process to reduce the movement? All of the above? Cross laminated timber goes against everything I know about wood movement as a woodworker. But the only exposure I've had to this stuff was beating 6 inch thick (3 layers) CLT pieces with an axe for firewood. I'm really curious how this stuff can work.