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Old 01-11-2014, 06:25 PM   #108
MP&C
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Join Date: Jan 2013
Location: Leonardtown, MD
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Re: 55 Wagon Progress

Continuing with the dissecting of the roof.....





When I got into the section with the old roof, it was difficult to see the spot welds (for drilling) down inside the drip rail. The underside was more accommodating, so the face of the drip rail was marked with the sharpie to use as a reference while drilling...





The lower corners of the opening were trimmed to size so that the roof patch could be clamped down into the drip rail. This will help to get more accurate markings on the roof skin for trimming the rest of the opening.








C-Clamp vise grips added to secure the overlapped panels for marking, then a straightedge used to read the crown of the roof to insure there were no dips or puckers along the top of the joint....





My favorite scribe, a local auction purchase...





Scribing the roof panel





Not much to spare! Trimmed the opening with some offset snips...








Corners touched up with a 1-1/2" drum sander








Clamped in place to hold the shape while we wait for the .023 ER70S-7 to come in. Note the butt weld clamps will be removed at welding for a tight fit-up.





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