Made an screw on end to the 40x40 aluminium profile, with 4mm treaded screwholes, so the end gets a larger surface for mounting larger switches or something else in the end. it allso secures very good with screws, so great for any aplication. end cap must everyone create for them selves, since i don't know what everyone will use this for hit like if download please :)
UPDATE put up a version with 3mm treads and a top for a 20mm diameter recker switch. printes well without support as in the pictures attatced