Triple Extension baseboard for the 7x17 prototype
barryjyoung

Triple Extension baseboard for the 7x17 prototype

This is the baseboard and focus mechanism for the prototype 7x17. I have not gotten any farther because I am working on film holders
Sweet!

Rear focus capability is nice. It looks like the main base board is made of 4 triangle pieces?
 
Hi Dave:

Yes, the baseboard is 4 pieces mitered together with biscuits for strength. We tried gluing strips together in two layers with the grain rotated 90degrees, but the warped like crazy and they were a little weak. This design has been in varying humidity for about 6 months or so and is as flat as the day it was complete. It is also very strong. I am a big but short man and I propped one end up on a 2x4 and stood in the middle. It is way too strong.

Barry Young
Young Camera Company
 
Hi Colin:

Yes, that is FAS Cherry. We use Cherry because it is a renewable resource firstly and secondly because it is one of the most dimensionally stable woods there is. It does not have the strength of Rosewood, but it is also about 1/4 the weight.

Thanks for the great comment.

Barry Young
Young Camera Company
 

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