Anyone out there built the Major beam engine? How did you fasten the cylinder casting to the bedplate? The drawing shows 4BA studs and nuts through a flange at the base of the cylinder. However, the flange is barely wide enough for 6BA nuts, and even then the moulding just above the flange, has to have small arcs cut in it to clear the corners of the nuts.

Maurice Cox

Thanks for the suggestions on the website via the link. Having given it some thought, and just finding a large redundant cylinder cover as source of material, I think I will remove the existing flange completely and fit a larger one. I shall loctite it onto the turned down cylinder end, then drill and tap small holes on the joint line, and inset plugs of threaded rod, again with loctite, to form a mechanical join as well as glue. Probably not needed, but I am a belt and braces man. Thanks again

Maurice Cox