Re: Portable line boring in reply to algar, 02-09-2013 07:38:46
Nah, I've always been the 'bore welder', LOL. For what they cost, like you, we've never had enough work to justify buying one. Too with the heads we've made we've done holes as large as 10 inches plus in diameter, with the largest being the top and bottom bushing holes in a 260 F/A scraper neck. Dad actually made a special setup to do those that included a 4 legged 'spider' to set in the middle of the neck to support the bar and stiffen it enough to do thart large of a hole. Granted when you get that big it's slow cutting as you can't hog into the material, but for the occasional hole it works just fine. I even made one some years back that allowed me to do a blind hole for the RR. In that case I made a setup that had two bearings inline with each other that I could weld to the base metal of the machine. The outer bearing was a smaller ID than the inner and I made a boring bar that had a 1 1/4 end for the drive head and a 1 1/2 end long enough to catch the through hole and the blind hole behind it. Again it was slow cutting and took a bit of time to do it but it saved customer a massive amount of money over what their other repair choice consisted of. That's the kind of 'impossible' jobs Dad and I have always tended to get asked to do. While I enjoy doing the run of the mill jobs that come my way I really like the challenging ones even more.
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