Thanks for the feedback.
A torsion box is basically like a hollow core door. Light weight interior structure with a skin on both sides: Torsion box
My torsion box will be 5'X12'X2". The perimeter and main ribs are 1"X1 3/4" kiln dried pine. Light and straight. The secondary ribs will be 1/4'X1 3/4" baltic birch plywood. The top skin is 1/4" baltic birch ply and the bottom skin 1/8" bb ply.
I'm guessing now it will be under 1 pound a square foot or 60 pounds total. Everything will be glued and brad nailed.
As for not doing routed - I needed something light to hang from the joists in my garage. Routed adds a lot of beef in material. And perhaps the biggest reason is I had the 60+ feet of track for 40 years and always enjoyed it. With continuous tape and a new Pyramid power supply it should be pretty sweet.
A torsion box is basically like a hollow core door. Light weight interior structure with a skin on both sides: Torsion box
My torsion box will be 5'X12'X2". The perimeter and main ribs are 1"X1 3/4" kiln dried pine. Light and straight. The secondary ribs will be 1/4'X1 3/4" baltic birch plywood. The top skin is 1/4" baltic birch ply and the bottom skin 1/8" bb ply.
I'm guessing now it will be under 1 pound a square foot or 60 pounds total. Everything will be glued and brad nailed.
As for not doing routed - I needed something light to hang from the joists in my garage. Routed adds a lot of beef in material. And perhaps the biggest reason is I had the 60+ feet of track for 40 years and always enjoyed it. With continuous tape and a new Pyramid power supply it should be pretty sweet.