3/4" Pennsy A3

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A little more progress over the past two days. The Pedestal Brace and Axle Box were machined. These parts are actually two pieces soldered together so that they can be machined exactly the same. Then they are set on the frames as a jig to drill the mounting holes in the frame.
Here is the pedestal brace in the vice. At this point it just needs the holes drilled. The block behind it is the axle box blank.
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Here both parts have been machined and drilled. The frames were drilled and tapped, and the parts are attached.
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Next came one of those nervous moments. Drilling/reaming the hole in the axle box/frame. If this operation goes south it can ruin the frames as well. :fan: So, I got it all set up. Took a deep breath, and went to it. Thankfully it turned out just right. :thumbup:
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Next up are the front and rear end sills. More fun to be had...
 
I finished up the end sills. Putting the radius on the ends of the front end sill was a learning experience. And, there were a lot of holes to drill and tap. But, it was fun. :)

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The main frame rails were also completed last night.

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It's starting to look like something now!

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Next up are the center cross frames and the lead driver axle box. More fun to be had...
 
The fruits of last night's labors.

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I still need to drill the center braces for the axle box pins. More fun to be had...
 

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