$fn = 60;
height=12;

include <BOSL2/std.scad>
include <BOSL2/shapes2d.scad>
include <boltsos_0.4.1/BOLTS.scad>

module frontScrew() {
    cylinder(h=20, d=5.4, center=true);
    translate ([0,0,-7.5]) DIN931("M5");
    translate ([0,0,-9]) DIN931("M5");
    cylinder(h=25, d=5, center=true);
    translate([0,0,7.5]) cylinder(h=6, d=9);
}

module backScrew() {
    cylinder(h=5,d=3);
    DIN931("M3");
    translate ([0,0,2]) DIN931("M3");
}

color("cyan") {
for(i=[0:1:2]) {
    translate([30*i,0,0]) {
        difference() {
            union() {
                zcyl(l=height, d=25, rounding=1);
                rotate([90,0,0]) prismoid(size1=[25,height], size2=[20,height], h=24, rounding=1);
                translate([0,-24,0]) scale([1,.7,1]) zcyl(l=height, d=20, rounding=1);
            }
            zcyl(l=height, d=16, rounding=-1);
            translate([0,-24,0]) cuboid([11,22,height], rounding=-1);
            rotate([90,0,180]) translate([0,0,8]) backScrew();
            translate ([0,-21.5,0]) rotate([0,-90,0]) frontScrew();
        }
    }
}
}