I’ve started working on the axle pump and have gone about the body in a slightly different way so thought I’d post it in case it was of use to someone. The book calls for 2 pieces of 1/4” round soldered together at right angles
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I don’t have access to any milling equipment at the moment so was a bit concerned about getting an accurate mitre on the joining piece to ensure it sat square at 90, and then figured clamping it central while soldering would be a faff as well. After a bit of head scratching I decided to make the threaded part of the body first, from brass hex, so I drilled and then reamed a 1/4” hole through the middle with the center of the hole the right distance from the faced end of the hex. The hex was the turned to size and threaded, leaving a little extra meat to allow for the hole:
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The upright part of the body was then turned as per the drawing but to be a tight push fit in the 1/4” hole, this meant silversoldering in the correct place was easy:
Going to have to continue in another post as it won’t let me upload another photo...