+
+ // strap
+ for (m=[0,1]) mirror([0,m,0]) {
+ translate([main_width/2, 0, strap_height]) {
+ hull(){
+ translate([ -strap_around,
+ -pos_web_thick/2,
+ -(strap_thick + strap_around) / strap_fixing_slope ])
+ cube([ strap_around,
+ pos_web_thick/2 - strap_width/2,
+ 0.5 ]);
+ translate([ -strap_around,
+ -(strap_around + strap_width/2),
+ 0 ])
+ cube([ strap_around*2 + strap_thick,
+ strap_around,
+ strap_fixing_height ]);
+ }
+ mirror([0,1,0])
+ translate([ strap_thick,
+ -strap_width/2,
+ 0 ])
+ cube([ strap_around,
+ strap_around + strap_width,
+ strap_fixing_height ]);
+ }
+ }