// yagi support parts for dir & ref elements 
// JP Hare, 03 June. 5th 2020, version 1.2

// 
difference () {
translate ([0,-45,0])
cube([30,120,30]);


// hole for boom
translate ([15,15,-1])
rotate ([0,0,0])
cylinder (h=55, r=10, $fn=90);

// self-tep screw holes for boom 
translate ([-25,15,23])
rotate ([0,90,0])
cylinder (h=80, r=2, $fn=90);

// hole for 6mm di element
translate ([30,76,10])
rotate ([90,0,0])
cylinder (h=122, r=3.2, $fn=90);

// self-tep screw holes for driven ele Ia
translate ([-25,0,10])
rotate ([0,90,0])
cylinder (h=80, r=2, $fn=90);

// self-tep screw holes for driven ele Ib
translate ([-25,-35,10])
rotate ([0,90,0])
cylinder (h=80, r=2, $fn=90);

// self-tep screw holes for driven ele II
translate ([-25,30,10])
rotate ([0,90,0])
cylinder (h=80, r=2, $fn=90);

// self-tep screw holes for driven ele IIb
translate ([-25,65,10])
rotate ([0,90,0])
cylinder (h=80, r=2, $fn=90);

// remove un-needed support I 
translate ([-1,-46,-1])
cube([18,35,32]);

// remove un-needed support II
translate ([-1,40,-1])
cube([18,38,32]);
}

// add middle section to stop water pooling
translate ([29,21,10])
rotate ([90,0,0])
cylinder (h=12, r=4, $fn=90);