Thanks for your replies guys,,

So others have been given a 12mm bar too,,So maybe it was'nt accidental after all..
David,, i'll order up some wotzit bar/rod tomorrow,,
Dave,, its a blue one and there was no free tilting vice with it,,,I wish there was...
John,, i think i'll be doing the same as you..and making one to fit...
jonny,, the mill and collets were bought at the same time on the assumption that the drawbar thread would a standard 7/16th like standard collets..
thanks again gents..

....Mike....
.....