Solar Finder Scope Remix - Captive Nuts

I really like calderonf's Solar Finder Scope and rsuban's mod to make it rear viewing with a piece of paper as the viewing screen. All I wanted to do was add features to capture 4-40 nuts on the backside to make this totally toolless when using thumb screws. I have also included a pdf and dxf of a target that I drew in AutoCAD that you can print out and use in your finder. With the thumb screws it makes it really easy to setup the crosshair on the projected sun dot to align this with your telesc