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BackA _big_ knob, these are for steps only row_1 = bottom_row + v_margin + 12; top_row = height - v_margin; working_increment = working_height / (8+tolerance/5); // generally-useful spacing amount.
- -4.41238 5.81619 7.55007 vertex 5.77934 -4.34766.
- -9.631829e-01 -2.688471e-01 3.293205e-05 facet normal.