OpenSCAD Chess

This is a chess set derived from my glChess chess set, but with many improvements. I have redrawn all the piece profiles by hand and now generate all the pieces in OpenSCAD using rotate_extrude. I have remixed the knight from zheng3's "Garden Guardian", which is an improved version of my original knight (June 23, updated "horse3.stl"; cleaned up a few wayward lines and points, and widened the muzzle so that it looks more like a horse and less like a dragon when viewed from the front). June 26, 2015 update: Added split versions of all the pieces except the rook to avoid overhangs and make the pieces printable without support (the rook has worse overhangs when printed in halves). All pieces, both the whole and split models, have been widened a bit at the neck so that they are not quite so delicate and prone to snapping in half. Also, removed all the individual DXF and SVG files and collected them into two ZIP files. Update: If you insist on printing upright, take a look at the remix at http://thingiverse.com/thing:3381939 which has modified the outlines to smooth out the sharp transition from vertical to horizontal, beefed up the cross on the king's crown to make it less likely to snap off, and added a support under the knight's chin that can be left in and doesn't detract from the piece's aesthetics. For an OpenSCAD-designed chess board to go along with the chess set, see http://thingiverse.com/thing:957958