I'm not sure how others do these, but I thought I'd show how I did mine. Here is a picture:
I cut a piece of masonite, glued small strips of wood around the edge, and then one slightly thinner and wider to form a lip on the bottom, then screwed two pieces of scrap aluminium on top to hold the shutter in (this makes it easy to shift the shutter to other housings for other lenses).
As you can see, this shutter also has a homemade flash sync. Its super easy to make: just a small block hot glued to the shutter to hold a stripped wire in position so that when the comes up it hits the wire. The other wire is tied to a mounting hole of the shutter (It was on the screw when the shutter was mounted in camera). The other end is just a connector from a sync cord. When the piston hits the wire the circuit is completed through the body of the shutter. Looks ugly, but its functional.
For the back I cut a hole the same size as the inside rim of the lens. Then I cut some long strips from a file folder (the orange thing in the picture below is a leftover scrap piece), then I wrapped the lens in plastic wrap, and started wrapping and glueing strips around the end of the lens. I think I went round 4 or 5 times, holding the piece in place with a rubber band while I glued up the next. When I thought I had enough I let it sit for an hour, then took it off and glued it on the masonite. Here is a picture of the back:
I sprayed on a bit o paint and called it done. Don't know if this is th best way, but it worked for me.
Tim
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