Glider project - printed rib & stencil

I created this rib for my new glider project.
Stencil can be used if you prefer balsa ribs.
Printed rib weight is about 3 grams.
Vertical(at end of rib) and horizontal grooves(top and bottom of rib in the middle) are for carbon strips 6mmx1mm.
Front edge groove is for 8-9.5mm balsa stick.
front grooves top and bottom - for balsa sheeting.
ending edge has tip to glue into 3mmx15mm balsa stick.
Either use spar 12mm carbon tube or balsa square pieces between ribs to make it rigid.