Second day flying my J-57 Scratchbuilt KFm Slope Glider. It's made from 1 sheet of dollar store foam board, covered in packing tape.
More info here: http://jeffs.tiddlyspot.com/#J-57
Appears on these pages
Aircalcs3 - J-57 (1 Sheet KFm SAL/Slope Wing) Made from a single sheet of Readiboard 5.4 oz KFm2...