Merges vertices closer than tolerance on every axis into the first such
vertex seen (a grid of cells tolerance wide; each vertex looks in its
cell and the 26 around it). It moves geometry away from what the app
draws by up to tolerance per axis, so it is opt-in: it closes seams whose
copies differ by an ulp or so, which no exact weld or format can.
Merges vertices closer than
toleranceon every axis into the first such vertex seen (a grid of cellstolerancewide; each vertex looks in its cell and the 26 around it). It moves geometry away from what the app draws by up totoleranceper axis, so it is opt-in: it closes seams whose copies differ by an ulp or so, which no exact weld or format can.