- cylinder(r= negative_dia/2 + negative_wall,
- h = negative_l + midsection);
- translate([0,0, midsection])
- english_thread(diameter=negative_dia/inch, threads_per_inch=20,
- leadin=0, internal=true, test=$test,
- length= (negative_l + inch/19) / inch);
+ union(){
+ cylinder(r= spanner/2 * 1/(0.5 * sqrt(3)),
+ h = negative_l + midsection,
+ $fn=6);
+ translate([0,0, midsection+negative_l]) {
+ mirror([0,0,1]) {
+ hull(){
+ cylinder(r= base_dia/2, h = base_th_min);
+ cylinder(r= 0.1, h = base_th_max);
+ }
+ }
+ }
+ }
+ translate([0,0, midsection + negative_l])
+ CameraMountThread(negative_l);