On Wed, 18 May 2011 09:37:38 +0100, Bill wrote:


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.


With a decently sharp hole saw and a drop of oil as lubrication it
should be quite easy and quick if the power tool is reasonably
powerful. Used to similar jobs regularly. A note of caution. If the
tool is powerful enough to do a reasonable job it will be strong
enough to hurt you and break from grip if the saw jams which it often
does just as it breaks through unless you are ready.
A drill with a clutch is recommended if you have access to one.

G.Harman