This 19mm tube bracket has more curves than the original, so might be a little stronger. The circle plate is a little bigger making room a larger countersink on the screw holes. The support underneath is a little bigger, and blended in. Best printed with 100% fill for strength. (the screw holes have been moved out a little, so will not match the original bracket). OpenScad file included. See the original page for the Spool Spinner and its OpenScad file. http://www.thingiverse.com/thing:991364/#filesPrinted at 0.2 layer, 3 shells, 100% fill. No supports or raft needed.