Eclips3D A16 and A17 rod brackets

Original parts were designed to be printed vertically. This makes the parts susceptible to cracking along the layer lines. I remade the parts so that they can be printed laying flat with the layer lines parallel to the rods. This should make them a bit stronger and alleviate cracking.

Added files with a little looser tolerances. Rod hole is increased to 10.2mm, M3 nut cutouts are enlarged to 5.8mm.