The solution to the knackered thread in the cylinder might be to reduce the outer diameter of the cylinder body and make the holes go straight through the flanges rather than have the studs in blind holes...
While thinking on that and not fancying more CAD/computer work for a while I decided to cut some metal for the standards - here's the 1/4" steel all squared up but the plan is to thin a good part of the uprights to 4mm to mimic the original castings. I might file some curves on the uprights as well to make them look a little less blocky. Brass or bronze crankshaft bearings will be used in the split tops. If I had the skill they'd look like the one on this page ...we can but dream.
Oh yeah, I also fitted the outlet connector to the pump but a photo of that can wait 'til next time.
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