Interlocking rings puzzle, noob printer edition

thingiverse

This tweak of Emmett's Interlocking Rings Puzzle is designed to be easier to print by using a fully connected first layer. The tradeoff for losing some elegance is well worth it to avoid frustration with failed prints. The original model has tiny pieces with a very small base layer surface area that get knocked loose easily while printing. Printing with a brim seems excessive since most of the model doesn't need it, so this model adds a small amount of brim-style connections at the intersections to keep them in place until they get bridged to the rest of the model. Please double-check your slicer to make sure that the connections in the first layer are present and look reasonable. The added settings are customizable: `brim_height`: vertical height, adjust if needed to ensure one layer of brim. If it's too thin, the slicer may ignore it. `brim_gap`: a tiny gap between the support brim and model. This is intended to make supports easier to separate cleanly. The brim gap ensures that the slicer preserves individual walls instead of merging adjacent volumes. Cura respected this setting, but Slic3r PE did not. Ideally lines at this separation distance should still stick together, just less strongly than the adjacent wall.