Step 8: Main Assembly
Bolt the main gantry plates to the lower support pole main pivot.
Bolt the long link bars to the mid support pole main mount.
Bolt the center vertical bars to the other end of the long link bars; remember the spacers and wire guide pulley.
Bolt both pairs of gantry plates to the lower end of the center vertical plates, again, remember the spacers.
Bolt the short link bars to the middle of the center vertical plates.
Bolt the short link bars, and secondary gantry plates to the end vertical plate.
You now have the main moveable assembly sorted, test it out by moving the screen around, and ensure it can move in the directions it should (postition, spin, tilt) while staying horizontal. Next is the pulley/wire system...
Start by bolting the fixed end to the secondary gantry plates.
Next bolt pulleys onto the main gantry plates, and top main pivot plate on the support pole.
Route the wire over the center vertical bar pulley, under the main gantry plate pulley, over the support pole pulley, and down through the support pole.