Originally Posted by SidecarFlip
Roy is an old fart (like myself and Gary) we have too much time to think about stuff whereas the younger crowd just goes and does it.......
HEY! watch that!!!
I learned a lot from my Dad, and he was a master tool maker (he had the paper work from the Fed). He was literally a farm boy from Tennessee that followed US31 north. Later in life I served my first apprenticeship with a bunch of Germans and Dutchmen. I watched those guys do finish grind work in a lathe all the time, and at times it looked rather rube goldberg. But they got results! One I still remember as if it were last week was a large brass cylinder that was about four feet long. The bore needed to be honed. They made a series of plugs wrapped with black paper and lapping compound. I've seen crankshaft journals reground accurately with a wooden block and emery paper more than once.
My all time favorite one was when the guys came and got me one Saturday morning on a golf cart to have a look at a large J&L CNC lathe (20" chuck). They were changing all the wipers and filters and things on an annual major PM, plus fixing a few things that needed fixing. The Z axis ball screw bearing pack was very loose at both ends. When they broke the bearing pack loose at the chuck end the bearing block sprang up about eight or ten inches! The screw was bent a bunch. The guys removed it, and then came and got me. It was bent over ten inches. I figured they must have had one serious wreck, and we all started going over everything, and it was perfect. I go up to where I stored the ball screws and find a new one, and have it brought down to the job. Called Dave Bush at Lead Screw International and explained what I was seeing. He stopped in a couple days later to look at it (the screw was new six months prior). Dave sends it back to his shop with the plan on building a new shaft, but keep the old nut. His guys actually put the screw in his arbor press and straintened it. Worked like it had never been bent! Dave confirmed that the machine had not been wrecked. The gist here is that you'd be surprised as to what you can do if there is a serious need.