Shutter Info - Help

I am trying to find information on how to add a shutter. Being that Ehgemus is gone for the time being, I am going to contact my uncle to see if he can build or allow me access to try my hand at machining (I have NO experience, I will NOT be building for others). I would like to add a shutter. Is there something premade that yall are aware of? Have yall seen a guide? I only found one thread and it was a mod of a DX laser. I'm looking for the actual shutter part itself if at all possible.

I was able to find it. If anyone has any further information please include it.
I found it as "Iris Diaphragm" and "Iris Aperture"