$fn=60;

include <BOSL2/std.scad>
include <nutsnbolts/cyl_head_bolt.scad>;

tube_length=400;
tube_diam=16;

module screw_back() {
    *nutcatch_parallel("M5", clh=0.1);
	translate([0,0,27]) hole_through(name="M5", l=45, cld=0.1, h=10, hcld=0.4);
	rotate([0,0,90]) translate([0,0,-10]) nutcatch_sidecut("M5", l=20, clk=0.1, clh=0.1, clsl=0.1);
}

module screw_front() {
    *nutcatch_parallel("M5", clh=0.1);
	translate([0,0,26]) hole_through(name="M5", l=24, cld=0.1, h=3, hcld=0.4);
	rotate([0,0,-90]) translate([0,0,10]) nutcatch_sidecut("M5", l=20, clk=0.2, clh=0.5, clsl=0.5);
}

module end() {
    difference() {
        cuboid([100,20,50], rounding=2);
        translate([-30,0,0]) ycyl(d=16.5, l=10, rounding2=-1, anchor=FRONT);
        translate([30,0,0]) ycyl(d=16.5, l=10, rounding2=-1, anchor=FRONT);
        rotate([0,0,180]) screw_front();
    }
}

module mid() {
    difference() {
        union() {
            cuboid([100,30,25], rounding=2, anchor=TOP);
            cuboid([100,30,25], rounding=2, anchor=BOTTOM);
        }
        translate([-30,0,0]) ycyl(d=16.5, l=30, rounding=-2);
        translate([30,0,0]) ycyl(d=16.5, l=30, rounding=-2);
        cuboid([110,40,2]);
        translate([0,5,0]) screw_back();
        translate([0,-7,0]) screw_front();
    }
}


color("grey") rotate([90,0,0,]) {
    *tube(od=tube_diam, id=tube_diam-3, l=tube_length);
    translate([-30,0,0]) tube(od=16, id=14, l=400);
    translate([30,0,0]) tube(od=16, id=14, l=400);
}

translate([0,tube_length/2,0]) mirror([0,1,0]) end();
translate([0,-tube_length/2,0]) end();

color("red") {
    mid();
}