Wingtip light mounts

I need to make some mounts for the wingtip lights. So I traced the outline of the lights onto some aluminum.

I also made the same trace onto some fiberglassing foam and contoured it to the wing shape.

Here it is glued in place on the wingtip.

Then I glued the aluminum reinforcements onto the foam.  I put several holes in the aluminum to help the epoxy grip the aluminum.