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3D Printed Triplicity Tub - Designed by Clockspring3D
You might remember the Japanese Weave Tiles from a little while back. I really love that style of weave and I wanted to work that into a vase mode print. Now, there are complications in doing that, because we need to consider 'overhang' angles both upwards and downwards.
My favourite approach to dealing with that, especially if I'm not entirely sure how things are going to end up, is to start by developing the "front" detail, which in this case is the three-pronged form that curves outwards at the centre so that the ends of the adjacent tiles' prongs will sweep in beneath it. Then it's a matter of "extruding" that in all directions at 45 degrees to ensure that all the angles are friendly.
I put "extruding" in quotes because it inevitably involves hacking things into bits, constructing planes and filling in behind them, because the actual extrusion tools are really not built for such silliness! But conceptually, it's like extruding back and wide into the main body. Then it's a case of tiling, trimming the tiles so they overlap the correct amount, and constructing the rest of the design around it. Problem solving really is the most fun part of designing things! :)