Reversable hinge with screw holes

I really liked the reversable hinge andyosier (ID 1096475), but it lacked holes for screws.
This is a remix of the same hinge, but now with holes for countersunk screws or bolts (4mm)

• Update -
  added 2 photographs of how the hinges are used right now;
  I used 3mm underfloor foam board to make a heat chamber for my 3d printer which I use when printing large things to prevent warping and layer separation. (i print mainly in ABS)
  The heat chamber can be folded to a flat package for time i don't need it.