Today, drilling and cutting of steel pieces continues with the 9 pieces which tie the front and back beams together.. These are about 2.6m long 50mm square tubes with two holes drilled at each end and the tops of the boxes sliced off to exposed the drilled holes.
Beam Tie Drilled and sliced
To make it easier to make the 9 pieces a jig is made to allow the same actions to be repeated over and over again with consistent results.