// William A Stevens V // Reflective prism base clip for 1/16 inch lexan with a 1.5 inch bottom side length. s=1.5*25.4; for(i = [0:4]) { rotate([0,0,90*i]) translate([-(s/2),-(s/2)-2.5,0]) union (){ translate([0,3,0]) cube([5,6,5.5]); difference() { translate([0,-3,0]) cube([s,7,5.5]); rotate([90-54.735,0,0]) translate([0,1,1]) cube([s,1.75,6]); } } }