Postby Alan Cantwell 1131 » September 11th, 2016, 7:26 am
Theres not a lot of meat on the web, dont go mad with the boring, interesting notes on the shrinkage off Steve above, but you have to ask yourself, do you have nitrogen and a heat source? Or will it be the freezer for one, and the oven for the other? If i was boring it, i would leave the 4 jaw out of it, and bore some soft jaws, and maybe pack one jaw out, but do you have a set of soft jaws for your chuck? If you go the 4 jaw route,do as Steve suggests, its important to go back and forth with the clock, as it squares the face to the bore, Use the tailstock barrel front face against the crank webb to square it up, never fails! I personally would have gone with the alignment bush, and welded it, but hey ho, too late now, I wonder if todays so called engineers could come up with a way of repairing this sort of thing? I doubt it!