Yeah!! The lower longeron came off the template very well, I’m super happy with the results! This is without any glue or clamps:

And this is an important test, without glue, and only three clamps, all parts stay in position virtually stress-free. Awesome!

So I’ve started gluing the frame. First joint of the upper longerons with 30 min epoxy, because it will take the full stress of the bend inwards later on. The rest of the frame will be glued with Aliphatic wood glue: