The glider is as far as I've gotten so far. A larger version will take some patching
together unless you have some larger sheet foam.
The one I made has a 7" winspan and was made from several plates of 1.75mm
foam.
Cut each wing half from one plate and then glue it to a balsa stick. I used hot glue
and the extra weight made little difference.
Then cut out the half circle bridge and glue it to the wings. Make sure you cut the wing
& bridge flaps for trimming. It does need a fine tune up.
Last add weight to the nose until you get a nice glide. You might need a bit of "up"
elevator to the wing tip flaps to get a nice lift.