Projector Offset, Materials, and More

I found a great resource online that provides the dimensions of a projected image from a specified projector given various parameters of how you will set up your home theater system. I can use this information to determine where my image will be in relation to the center axis of my lens.

(projected dimensions based off of distance from screen)

The site also provided me with the official product manual and mounting hole locations on the back. The less guess work I have to do, the better!

(projector mounting hole locations)

I am now working on designing my Z axis. My current plan is to have it run on three LM8UU linear ball bearings. I will use two bearings on one side, and one on the other. This helps to lock the z axis into a plane, by fixing three points. These bearings will run on 8mm smooth polished drill rod. The 5/16"-24 nuts will be captured above and below the z axis, with a spring between the axis and the top nut. This system is also used in the RepRap Prusa x ends, and helps to prevent binding.

(Z axis concept)

I have a week off of school, and will divide my time between work and the printer. All of the components have arrived, so I just need to start building the frame.