thick = 1.5;
size_x = 35;
size_y = 57.5;
size_z = 5;
size_pcb = 1;

top_y = 20;
bot_y = 17.5;

mount_x_dist = 7.5;
mount_y_dist = -5.5;
mount_hole = 1.5;

difference()
{
	union()
	{
		difference()
		{
			// Main Block
			cube([size_x, size_y, size_z], center = true);
		
			// Hollow
			translate([0, 0, thick])
			{
				cube([size_x - 2 * thick, size_y - 2 * thick, size_z], center = true);
			}
		}

		// Mounts
		for (x = [-1:2:1])
		{
			translate([x * mount_x_dist, mount_y_dist, -size_pcb/2])
			{
				cylinder(size_z - size_pcb, mount_hole + 1, mount_hole + 1, $fn = 360, center = true);
			}
		}
		

		// Top Y
		translate([0, size_y/2 - top_y, -size_pcb/2])
		{
			cube([size_x, thick, size_z - size_pcb], center = true);
		}

		// Bot Y
		translate([0, -(size_y/2 - bot_y), -size_pcb/2])
		{
			cube([size_x, thick, size_z - size_pcb], center = true);
		}
	}

	// Mount Holes
	for (x = [-1:2:1])
	{
		translate([x * mount_x_dist, mount_y_dist, -size_pcb/2])
		{
			cylinder(size_z + 1, mount_hole, mount_hole, $fn = 360, center = true);
		}
	}
}