Hand painted Lucy fan art coffe table. I started a new home for just this kind of junk... http://thriftstorelore.posterous.com/

I had a bayonet mount for the Polaroid 600 SE that I took from a re-purposed 127 mm lens. I decided to put the mount to use by making it into a pinhole lens for my 600 SE.

First off I mounted it to the camera to get some measurements. Focal-length, distance from where I intended to mount the pinhole to the film surface. Image circle, I measured along the diagonal of the 600 SE film back to determine how big the image diameter needed to be.

Over to Mr. Pinhole to calculate the ideal size of my pinhole, as well as to determine some useful info like f stop and angle of view.

Cutting the lens barrel down to just the grip and bayonet for a cleaner look, I then sanded the surface to leave a polished aluminum ring around the outside of the mount.

Tracing around the inside of the barrel on a piece of 1/16" ABS plastic, which I then cut out to use as the cap.

A pinhole plate I had from a previous project was the correct size. Making your own pinhole is super easy, to get an accurate measurement I use this method.

With a hole in the center of the ABS cap, and using another ring of ABS plastic, I mounted the pinhole plate using ABS cement.

To fabricate a shutter I used a teardrop shape of ABS drilled and bolted it to the cap so it could be swung side to side to open and close.

A little black automotive silicone around the inside seams to fend off any light leaks.

Here it is mounted on the camera.

Here are some test shots.