Most of the sanding done with foam backed 2 inch disc and 220 grit at slow speed driven by a varispeed drill- fast tends to cut deep where direction changes occur. The Mouse started with a piece of 1/2 inch pipe, with darts cut out of it, hammered closed, welded with a wire feed welder. ground down and extraneous bits welded on. Just like working with wax except harder. The kangaroo will fly the ornithopter and as you see, ears have been added. All of them will have glass eyes glued in after varnishing.
