Mirror cell, top view
Here the mirror cell is shown from top down. The cell-base itself is constructed from two layers of 9mm MDF, in a Y shape. For ventilation purposes (maybe a fan or so) a hole is left out in the middle. The bottom of the mirrorbox is also shown in this drawing. It is also made of two layers 9mm MDF, the hole in the bottom layer is 190mm and the hole in the top layer is 250mm, thus giving a 'staircase' structure. The cell itself has a similar structure, which can sink down inside the bottom. The reason for doing this is to save height.
Cell and bottom are connected with three spring loaded lockbolts (M-8) that are also used for collimation by means of the wingnuts on the bottom.
Note the cut-back corners of the bottom, that leave room for aluminium L profiles which connect the mirrorbox walls.
The levers are 15x15 mm aluminium U profiles, with on each extremity (75mm separation) a M-4 T-nut that serves as base for the silicone pads fixing the mirror. The fulcrum of each lever is an M-5 hex bolt, with a smooth shoulder of approximately 15mm. These are screwed into T-nuts in the sides of the Y.