Foam & Fiberglass Fixed-Wing Platform

This aircraft was built the conventional way, and deliberately so: a shaped foam core carrying a hand-laid fiberglass skin. The foam holds the aerofoil section and resists the core shear; the glass skin carries the bending and torsion and provides the surface. It is the same structural logic as a sandwich panel, made in a garage.

Hand layup is a genuinely physical skill — wetting out the cloth evenly, working out the air, and using no more resin than the fabric needs, because every gram of excess resin is weight that contributes nothing.

Coming after the 3D-printed warbirds, this was the direct comparison. Printing gives exact geometry and repeatability; foam and glass gives a far better strength-to-weight ratio and, crucially, survives landings — a cracked glass skin can be sanded and patched in an evening, where a broken printed part has to be reprinted and rebonded.

For an aircraft that is meant to be flown regularly rather than admired, that repairability is worth more than the geometric precision, and this airframe was the one that made the trade-off obvious.