I apologize in advance - this is a cross post so if you frequent other forums you have already seen this
Most of you will probably laugh at this and wonder why I bothered to even post it but to me it is an accomplishment. This morning I was assemblying a roller bearing cup and didn't have anything to use as a pusher for the arbor press. I wanted to make sure I was applying pressure to the right areas. Everything i found laying around was either too big or too small. In my mind I'm thinking I can't make smaller bigger but maybe I could do the reverse. I had a galvanized pipe fitting threaded end cap that was too big so I said let's give that south bend a try. I threaded the end cap on a stub out and chucked it up with a three jaw. It was running out of round as expected but not bad. I wasn't concerned with concentricity - just OD so a turning I went. The first few passes were very light and the interrupted cuts with the three ribs was a little disconcerting but I plowed ahead. The fourth cut resulted in the 4" stub out flying out of the chuck to the back of the lathe. I thought about that as I dug up my full face shield and decided I needed to center drill it and use a tail stock center for support. I put the stub back in the chuck and cranked it down pretty good, centerdrilled the end cap and installed a dead center with lubrication. This time it turned just fine. I got it down to the required diameter and went back to pressing the bearing.
Like I said - not a major accomplishment for most of you but a huge hurdle for me. It made me think about work holding techniques, depth of cut, feed, etc. I'm glad I have a lathe . Here's a picture of what I started with (on the left) and what I ended with (on the right)
Thanks for looking
Rick
Most of you will probably laugh at this and wonder why I bothered to even post it but to me it is an accomplishment. This morning I was assemblying a roller bearing cup and didn't have anything to use as a pusher for the arbor press. I wanted to make sure I was applying pressure to the right areas. Everything i found laying around was either too big or too small. In my mind I'm thinking I can't make smaller bigger but maybe I could do the reverse. I had a galvanized pipe fitting threaded end cap that was too big so I said let's give that south bend a try. I threaded the end cap on a stub out and chucked it up with a three jaw. It was running out of round as expected but not bad. I wasn't concerned with concentricity - just OD so a turning I went. The first few passes were very light and the interrupted cuts with the three ribs was a little disconcerting but I plowed ahead. The fourth cut resulted in the 4" stub out flying out of the chuck to the back of the lathe. I thought about that as I dug up my full face shield and decided I needed to center drill it and use a tail stock center for support. I put the stub back in the chuck and cranked it down pretty good, centerdrilled the end cap and installed a dead center with lubrication. This time it turned just fine. I got it down to the required diameter and went back to pressing the bearing.
Like I said - not a major accomplishment for most of you but a huge hurdle for me. It made me think about work holding techniques, depth of cut, feed, etc. I'm glad I have a lathe . Here's a picture of what I started with (on the left) and what I ended with (on the right)
Thanks for looking
Rick
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