So you would suggest about 30" wide?Its way bigger than that. A full-size keyboard is typically around 17 to 18 inches wide. Add 12 inches for a mouse on one side, or both sides.
I'm not sure what elided is...but the thread mentions these...I love how you elided units. Don't ever change.
Or do, and instead of a 3D printer have a bunch of chains under the mousemat that are shot through pilots in rafters, then grab your skin away from arteries with hooks for that Obsolete Human Suspensions / Cenobite thing.