include <BOSL2/std.scad>

$fn = 36*5;
t = 5;
rounding = 1;

// base to connect to the printer
base_hole_distance = 40;
base_frame_hole_d = 4.5;
base_dim = [61,23,12];

difference() {
    // base
    cuboid(base_dim, rounding=rounding);
    // holes for screws
    left(base_hole_distance/2) cyl(d=base_frame_hole_d, h=base_dim[2], chamfer=-1);
    right(base_hole_distance/2) cyl(d=base_frame_hole_d, h=base_dim[2], chamfer=-1);
}

// PTFE tube holder
tube_dist = 15;
tube_d0 = 2.5;
tube_d1 = 4.2;
tube_d2 = 6;
tube_h = base_dim[2];

difference() {
    union() {
        fwd(base_dim[1]/2 - 2*rounding) cuboid([tube_d2, tube_dist + 2*rounding, tube_h], anchor=BACK, rounding=rounding, edges="Y");
        fwd(base_dim[1]/2 + tube_dist) cyl(d=tube_d2, h=tube_h);
    }
    fwd(base_dim[1]/2 + tube_dist) cyl(d=tube_d0, h=tube_h, rounding=-rounding);
    fwd(base_dim[1]/2 + tube_dist) cyl(d=tube_d1, h=tube_h, anchor=BOTTOM);
}