x_size = 75;
y_size = 40;
z_size = 9;
pcb_x = 70;
pcb_y = 35;
wall_size = 1;
hole_rad = 1.5;
filament_x = 57.5 - pcb_x/2 - 13 - 1;
filament_size = 2;

difference()
{
union()
{
	difference()
	{
		// Main
		cube([x_size, y_size, z_size], center = true);

		// Hollow
		translate([0, 0, wall_size])
		{
			cube([x_size - 2 * wall_size, y_size - 2 * wall_size, z_size], center = true);
		}
		
	}

	// Bottom Hole Mounts
	for (i = [-1:2:1])
	{
		translate([i * (pcb_x/2 - 3) - 1, -(pcb_y/2 - 3) - 1, -0.5])
		{
			difference()
			{
				cylinder(z_size - 1, hole_rad + 1, hole_rad + 1, $fn = 360, center = true);
				translate([0, 0, wall_size])
				{
					cylinder(z_size - 1, hole_rad, hole_rad, $fn = 360, center = true);
				}
			}
		}
	}

	// Top Hole Mount
	translate([(41 - pcb_x/2) - 1, pcb_y/2 - 3 - 1, -0.5])
		difference()
		{
			cylinder(z_size - 1, hole_rad + 1, hole_rad + 1, $fn = 360, center = true);
			translate([0, 0, wall_size])
			{
				cylinder(z_size - 1, hole_rad, hole_rad, $fn = 360, center = true);
			}
		}

	// Fillament Block
	translate([filament_x, 0, -0.5])
	{
		difference()
		{
			cube([filament_size + wall_size * 2, y_size, z_size - 1], center = true);
			translate([13, pcb_y/2 - 12.5 - 1, 0])
			{
				cylinder(z_size, 13.5, 13.5, $fn = 360, center = true);
			}
		}
	}
}

	// Bottom Holes
	for (i = [-1:2:1])
	{
		translate([i * (pcb_x/2 - 3) - 1, -(pcb_y/2 - 3) - 1, -z_size/2 + 1])
		{
			cylinder(2, 2.8, hole_rad, $fn = 360, center = true);
		}
	}

	// Top Hole
	translate([(41 - pcb_x/2) - 1, pcb_y / 2 - 3 - 1, -z_size/2 + 1])
	{
		cylinder(2, 2.8, hole_rad, $fn = 360, center = true);
	}

	// Filament Hole
	translate([filament_x, 0, -0.5])
	{
		rotate([90, 0, 0])
		{
			cylinder(y_size + 1, filament_size/2, filament_size/2, $fn = 360, center = true);
		}
	}

	// Temp
	*translate([-x_size/2, y_size/5, 0])
	{
		cube([x_size, y_size, z_size], center = true);
	}
	*translate([x_size/1.5, y_size/5, 0])
	{
		cube([x_size, y_size, z_size], center = true);
	}
}