Building and attaching the base and its frame

The frame to house the wooden base is displayed below. It was made using 4 pieces of 25x25x1.4mm angle aluminum. These were screwed together to form a rectangular frame. 2 pieces of 3mm flat aluminium where used to form a centre support beam. These were screwed and positioned to sit level with the sides of the angle aluminum. The reason for this centre brace was that MDF board was the material which was going to be used. I was aware that this was common to bend in the centre thus, the support was added to ensure a flat board. 

The board was 9mm MDF cut to fit to the frame using a jigsaw. After the board got in the way of the screw which secured the frame to the legs, I had to cut a small square piece off each corner of the MDF board using the jigsaw. This gave room to screw and unscrew the nuts and bolts so the frame could be easily detached from the legs for storage later.