On Wed, 18 May 2011 11:23:57 +0100, The Natural Philosopher wrote:

Bill wrote:
I need to make or have made 2 additional removable steel supports to
match 6 that came with a trailer.
The present ones have a smaller steel pipe adjustable inside a 2"
outside diameter steel pipe. The larger steel pipe drops in to sockets
on the trailer, and has a 1/4" plate welded about 8" up to stop it
dropping through the socket and support part of the 2.5 tons to be carried.

My local friendly trailer man can do the welding but isn't happy about
making the 2" hole in the 1/4" steel plate.

Is the best tool to cut through the steel a bi-metal hole saw? Should it
be 50mm (advertised on ebay as 50mm/2") or 51 mm.

Would it be easier to hack and bodge something like an old Acrow prop?
What is the o/d of one of these or are they all different?

Any other ideas? Is this the sort of thing a decent metal fabrication
shop should be able to knock up simply and cheaply? The 6 original props
are all different, so it looks as though they were cobbled up out of
whatever materials were to hand.

Isn't a 2" hole in 1/4" steel plate exactly the sort of thing a
hypersonic depleted uranium round is supposed to make?

Any friends in the Army?

It's worth a shot.
--
Peter.
The gods will stay away
whilst religions hold sway