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  Saturday   March 26   2005       11: 23 AM

speed graphic project — i made a lot of progress last night

Things are going back together pretty well on my Speed Graphic. The first order of business was repairing the focal plane shutter. I removed the screw that holds on the shutter release. DO NOT DO THIS. The bottom of the screw sheared off. The upper controls are for selecting the curtain aperture. The lower controls are for setting the tension. This is really a pretty simple mechanism. Taking apart the tension setting requires a special tool but it was working fine so I left it alone. I removed the curtain aperture selection mechanism to try and repair my stupidity. I ended up using some epoxy to bond the screw back in. By selecting one of 4 curtain apertures and one of 6 tension settings you have focal plane shutter speeds between 1/10 of a second and 1/1000 of a second.

The focal plane shutter is one really long curtain with 5 curtain apertures. The largest is left open when using a leaf shutter. The other 4 come down at a speed determined by the tension setting and are each smaller than the next.

The rangefinder glass surfaces cleaned up nicely. The inner piece with all the mechanism mounts seperate from the outer shell. The viewfinder cleaned up nicely and it's starting to look like a camera again. There is a cover on top of the rangefinder. There is an attachment that shines a light down into the rangefinder and projects two beams of light for focusing in the dark. Where the two beams converge is where it is focused. Pretty neat for late 1940s technology. I need to get one of those lights. I still need to attach the strap and feet and the outside will be done.


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