wm_thick = 5;
wm_screw_dia = 4.5; // Timco wood screw 40mm, use brown plug
+wm_screwdriver_dia = 6.3 + 1.5;
wm_screw_around = 5.0;
wm_screw_slot = 3.5;
wm_screw_head = 8.0;
wmb_screw_around_z = 6;
wmb_screw_depth_min = 10;
web_screw_len = 15 + 1;
-wmb_nut_across = 8; // XXX
+wmb_nut_across = 7.82 + 0.35;
wmb_nut_around_min = 2;
wmb_nut_behind_min = 5;
-wmb_nut_th = 4; // XXX
+wmb_nut_th = 3.84 + 0.75;
wmb_mount_wall = 4.5;
wmb_mount_gap_xy = 0.5;
wmb_mount_gap_z = 0.5;
sm_outer_rad = sm_inner_rad + sm_main_thick;
wm_main_width = sm_main_width;
-wm_screwdriver_dia = wm_screw_head;
wm_y_min = sqrt( pow(sm_inner_rad, 2) -
pow(sm_inner_rad - (wm_thick - sm_main_thick), 2) );
wm_y_screw = wm_y_min + wm_screw_around + wm_screw_dia/2;