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extruding tool makes strange things
hey!
i actually try to extrude a pretty noisy mesh, its flat. it is a result of a bool operation. i reduced polygons too. optimized it, untriangulate, etc..
its looking good polygonwise, but when i start to extrude it some edges moving to different directions. but i want a clean extrude.
i simply attached my file.
please have a look ..