They are all cut at a notch in a long piece of AL that is pre punched. You need to cut them apart, then find the correct location where the holes and length line up, Then the ends are tapered accordingly. I think everybody gets a little confused over these.
Built/Flew an RV-7A
Air Troy Estates, East Troy, WI
Ford Expedition and TRICE "Q"
Built Glen L "ZIP" Classic Outboard Runabout and Super Spartan Hydroplane
Glen L Torpedo
Porsche Boxster 718