I made a couple of small modifications to the pipe fitting module so the center can be scaled which makes it more useful for designing custom pipe hubs for a geodesic dome frame, and adds better support in between the hubs for strength.
Here is the modified code:
/* [Pipe Fitting] */
Show_fitting = true;
/* [Center] */
center_diameter = 12;//[3:0.01:50]
center_shape = 6; //[3:1:100]
Rotate_center = 0; //[0:0.01:360]
Scale_center_x = 1; //[0:.01:4]
Scale_center_y= 1; //[0:.01:4]
Scale_center_z = .25; //[0:.01:4]
Rotate_all_X = 0; //[-360:0.01:360]
Rotate_all_Y = 0; //[-360:0.01:360]
Rotate_all_Z = 0; //[-360:0.01:360]
/* [Branch 1] */
Show_branch1 = true;
angleX_branch1 = 96; //[0:0.01:360]
angleY_branch1 = 0; //[0:0.01:360]
angleZ_branch1 = 150; //[0:0.01:360]
Rotate_branch1_Z = 0; //[0:0.01:360]
Rotate_branch1_inside = 0; //[0:0.01:360]
outside_diameter1 = 6;//[2:0.01:50]
inside_diameter1= 4; //[0:0.01:49]
length1 = 12; //[8:0.01:200]
outside_shape1 = 100; //[3:1:100]
inside_shape1 = 100; //[3:1:100]
/* [Branch 2] */
Show_branch2 = true;
angleX_branch2 = 96; //[0:0.01:360]
angleY_branch2 = 0; //[0:0.01:360]
angleZ_branch2 = 30; //[0:0.01:360]
Rotate_branch2_Z = 0; //[0:0.01:360]
Rotate_branch2_inside = 0; //[0:0.01:360]
outside_diameter2 = 6;//[2:0.01:50]
inside_diameter2= 4; //[0:0.01:49]
length2 = 12; //[8:0.01:200]
outside_shape2 = 100; //[3:1:100]
inside_shape2 = 100; //[3:1:100]
/* [Branch 3] */
Show_branch3 = true;
angleX_branch3 = 264; //[0:0.01:360]
angleY_branch3 = 0; //[0:0.01:360]
angleZ_branch3 = 30; //[0:0.01:360]
Rotate_branch3_Z = 0; //[0:0.01:360]
Rotate_branch3_inside = 0; //[0:0.01:360]
outside_diameter3 = 6;//[2:0.01:50]
inside_diameter3= 4; //[0:0.01:49]
length3 = 12; //[8:0.01:200]
outside_shape3 = 100; //[3:1:100]
inside_shape3 = 100; //[3:1:100]
/* [Branch 4] */
Show_branch4 = true;
angleX_branch4 = 180; //[0:0.01:360]
angleY_branch4 = 84; //[0:0.01:360]
angleZ_branch4 = 60; //[0:0.01:360]
Rotate_branch4_Z = 0; //[0:0.01:360]
Rotate_branch4_inside = 0; //[0:0.01:360]
outside_diameter4 = 6;//[2:0.01:50]
inside_diameter4= 4; //[0:0.01:49]
length4 = 12; //[8:0.01:200]
outside_shape4 = 100; //[3:1:100]
inside_shape4 = 100; //[3:1:100]
/* [Branch 5] */
Show_branch5 = true;
angleX_branch5 = 0; //[0:0.01:360]
angleY_branch5 = 96; //[0:0.01:360]
angleZ_branch5 = 0; //[0:0.01:360]
Rotate_branch5_Z = 0; //[0:0.01:360]
Rotate_branch5_inside = 0; //[0:0.01:360]
outside_diameter5 = 6;//[2:0.01:50]
inside_diameter5= 4; //[0:0.01:49]
length5 = 12; //[8:0.01:200]
outside_shape5 = 100; //[3:1:100]
inside_shape5 = 100; //[3:1:100]
/* [Branch 6] */
Show_branch6 = true;
angleX_branch6 = 0; //[0:0.01:360]
angleY_branch6 = 264; //[0:0.01:360]
angleZ_branch6 = 0; //[0:0.01:360]
Rotate_branch6_Z = 0; //[0:0.01:360]
Rotate_branch6_inside = 0; //[0:0.01:360]
outside_diameter6 = 6;//[2:0.01:50]
inside_diameter6= 4; //[0:0.01:49]
length6 = 12; //[8:0.01:200]
outside_shape6 = 100; //[3:1:100]
inside_shape6 = 100; //[3:1:100]
module fitting_outside(){
if (Show_branch1)
rotate([Rotate_all_X,Rotate_all_Y,Rotate_all_Z])
rotate([angleX_branch1,angleY_branch1,angleZ_branch1])
rotate([0,0,Rotate_branch1_Z])
cylinder(h=length1,r1=outside_diameter1/2,r2=outside_diameter1/2,center=false,$fn=outside_shape1);
if (Show_branch2)
rotate([Rotate_all_X,Rotate_all_Y,Rotate_all_Z])
rotate([angleX_branch2,angleY_branch2,angleZ_branch2])
rotate([0,0,Rotate_branch2_Z])
cylinder(h=length2,r1=outside_diameter2/2,r2=outside_diameter2/2,center=false,$fn=outside_shape2);
if (Show_branch3)
rotate([Rotate_all_X,Rotate_all_Y,Rotate_all_Z])
rotate([angleX_branch3,angleY_branch3,angleZ_branch3])
rotate([0,0,Rotate_branch3_Z])
cylinder(h=length3,r1=outside_diameter3/2,r2=outside_diameter3/2,center=false,$fn=outside_shape3);
if (Show_branch4)
rotate([Rotate_all_X,Rotate_all_Y,Rotate_all_Z])
rotate([angleX_branch4,angleY_branch4,angleZ_branch4])
rotate([0,0,Rotate_branch4_Z])
cylinder(h=length4,r1=outside_diameter4/2,r2=outside_diameter4/2,center=false,$fn=outside_shape4);
if (Show_branch5)
rotate([Rotate_all_X,Rotate_all_Y,Rotate_all_Z])
rotate([angleX_branch5,angleY_branch5,angleZ_branch5])
rotate([0,0,Rotate_branch5_Z])
cylinder(h=length5,r1=outside_diameter5/2,r2=outside_diameter5/2,center=false,$fn=outside_shape5);
if (Show_branch6)
rotate([Rotate_all_X,Rotate_all_Y,Rotate_all_Z])
rotate([angleX_branch6,angleY_branch6,angleZ_branch6])
rotate([0,0,Rotate_branch6_Z])
cylinder(h=length6,r1=outside_diameter6/2,r2=outside_diameter6/2,center=false,$fn=outside_shape6);
}
//
module fitting_inside(){
if (Show_branch1)
rotate([Rotate_all_X,Rotate_all_Y,Rotate_all_Z])
rotate([angleX_branch1,angleY_branch1,angleZ_branch1])
rotate([0,0,Rotate_branch1_inside])
cylinder(h=length1+1,r1=inside_diameter1/2,r2=inside_diameter1/2,center=false,$fn=inside_shape1);
if (Show_branch2)
rotate([Rotate_all_X,Rotate_all_Y,Rotate_all_Z])
rotate([angleX_branch2,angleY_branch2,angleZ_branch2])
rotate([0,0,Rotate_branch2_inside])
cylinder(h=length2+1,r1=inside_diameter2/2,r2=inside_diameter2/2,center=false,$fn=inside_shape2);
if (Show_branch3)
rotate([Rotate_all_X,Rotate_all_Y,Rotate_all_Z])
rotate([angleX_branch3,angleY_branch3,angleZ_branch3])
rotate([0,0,Rotate_branch3_inside])
cylinder(h=length3+1,r1=inside_diameter3/2,r2=inside_diameter3/2,center=false,$fn=inside_shape3);
if (Show_branch4)
rotate([Rotate_all_X,Rotate_all_Y,Rotate_all_Z])
rotate([angleX_branch4,angleY_branch4,angleZ_branch4])
rotate([0,0,Rotate_branch4_inside])
cylinder(h=length4+1,r1=inside_diameter4/2,r2=inside_diameter4/2,center=false,$fn=inside_shape4);
if (Show_branch5)
rotate([Rotate_all_X,Rotate_all_Y,Rotate_all_Z])
rotate([angleX_branch5,angleY_branch5,angleZ_branch5])
rotate([0,0,Rotate_branch5_inside])
cylinder(h=length5+1,r1=inside_diameter5/2,r2=inside_diameter5/2,center=false,$fn=inside_shape5);
if (Show_branch6)
rotate([Rotate_all_X,Rotate_all_Y,Rotate_all_Z])
rotate([angleX_branch6,angleY_branch6,angleZ_branch6])
rotate([0,0,Rotate_branch6_inside])
cylinder(h=length6+1,r1=inside_diameter6/2,r2=inside_diameter6/2,center=false,$fn=inside_shape6);
}
//
if (Show_fitting){
difference(){
rotate([0,0,Rotate_center])
scale([Scale_center_x,Scale_center_y,Scale_center_z])
sphere(center_diameter,$fn=center_shape);
fitting_inside();
}
difference(){
fitting_outside();
fitting_inside();
}}
//By setting the center shape to either 5 or 6 it is easy to align the branches to the correct angle, and the center can be made smooth so it won't cause damage to the plastic covering of the dome:
Then the tilt angle of the branches can be adjusted to whatever angle is needed for the dome and the center of the hubs can be changed to accommodate pretty much any shape of tubing you would want to use.