Mechanique :: DN8
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Donald's frame is back in the Marchetti fixture after the main diamond brazing is completed, flux soaked and roughly sandblasted and filed.  The photo shows a little clamp held on the centerline of the left rear dropout which supports a ruler which extends up to the back of the seat lug.  A machinists protractor is used to determine the topstay binder/cap mitre angle by measuring between the ruler and the seat tube.  Tomorrow the machine mitreing of the topstay cap and the rear wishbone brazing will be photographed and uploaded.

Donald's frame is back in the Marchetti fixture after the main diamond brazing is completed, flux soaked and roughly sandblasted and filed. The photo shows a little clamp held on the centerline of the left rear dropout which supports a ruler which extends up to the back of the seat lug. A machinists protractor is used to determine the topstay binder/cap mitre angle by measuring between the ruler and the seat tube. Tomorrow the machine mitreing of the topstay cap and the rear wishbone brazing will be photographed and uploaded.

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