Indicating an Inside Hole and Boring on a Metal Lathe

[@dougankrum3328]

Another thumbs up for you..an excellent mix, of part set-up, explaining your goals and machining....and....showing the reason the parts are often in the poor condition in the 1st place!!

[@phuzzz1]

Thanks for the video Keith, the reason I asked was because I recently had a similar situation, though I was boring it on the mill, it was a very corroded and somewhat out of round hole, you can see what I mean here John Deere Side Dump Bucket Repair Pt. 2 starting at about 3:08, and I had to just "feel" my way to a starting point, but I think it worked out OK. Thanks again for a great video.

[@phuzzz1]

Thanks Keith, it's all done now, it is a 3 part video, finished it up about a week or so ago

[@marcos3ltrv6]

Very useful video many thanks from the UK

[@blackcardredletters]

Thank you Ive watched a lot of videos today trying to get this process down. i have higher grade tools so i was able to take what you showed me and apply them to the fullest.

[@Worksengineer]

Hi Keith Keep up the good work, excellent videos on sympathetic restoration, the guys that built these machines in the fist place probably had the same problems of not quite having the right tools for the job but they just got on with it, much the same as you are doing, must be frustrating at times, but highly satisfying when you see the machines working again. Best regards from the UK, and keep the videos coming, I can't wait to see what this machine looks like when its cutting wood!!

[@62346]

Thanks Keith; really enjoying your videos.

[@tom7601]

Occasionally, your videos get posted with very low audio levels and only left channel. On my iPad, I need to use headphones; it's no problem with my desktop since I use speakers. I love your videos when you're working on the old equipment. Keep 'em coming! Tom - Vista, CA

[@donfoster1832]

Like most museums that don't have tons of money you do what you can with what you have or bring to the job. No fault there. Folks need to remember that with artifacts you have to balance historical preservation against functional restoration. That balance gnaws at me at the museum I volunteer at all the time. There's things I'd love to completely restore, but that would erase the historical story they tell. Thanks for your excellent videos.

[@BigMjolnir]

Keith, nice job. I'm sure the guys who built that machine would be pleased with the care you are putting into restoring it. As I was watching it occurred to me that another way to do this might be to turn a shaft that will fit into the bore as it is, and then indicate that instead. It would tend to average out the minor divots and pits, and give you a fair idea of the true axis of the bore. Assuming you had material for such a shaft would that be a workable alternative, or am I missing something? I know there are many ways to accomplish any given task, I'm just wondering if I've figured out enough about machining to be coming up with any of them! Thanks for the lessons! -- Mike

[@MatthewTinker-au-pont-blanc]

Thank you for another good video. I don't understand why you are setting up from the inside. I would have thought that the original raw casting set up was done from the outside as the bore in relation to it's mounting was the principal criterion. The actual bore being as inacurate as the original left by a core. Regards, Matthew

[@DrMatt96]

my left ear enjoyed this video

[@VintageMachinery]

+Mootypotuty Yep, we had some audio issues in some of my earlier videos. Took care of that a long time ago but there are still a few videos out there with only one side of the audio. Sorry....

[@apexprecitech]

Hello, the face that touches the anvil ball of the dial need not be spherical. as it has a fixed axis it can be flat. Just consider this.

[@DavidKirtley]

Without a surface to pick up, are you really going to get much better than you had just setting with the tailstock center where you started?

[@Mentorcase]

Exactly right.

[@kentuckycowboy2]

Howdy , Found my way here via tubalcain. I've noticed over the years that he sells off, trashes some of the stuff he doesn't want or might not be of his liking & not for him. I've come to think of him as a great guy just maybe he might cross paths with some tooling that would be of help to you in time . Just a thought .

[@budhrseh2001]

Keith, by indicating from the 'egg shaped' inside diameter and taking an average to find center, are you not moving the center from it's original location? Why would you not indicate off of the outside diameter?

[@VintageMachinery]

+budhrseh2001 I was trying to keep the new bore on center with the original bore so that I did not have to remove any more material than necessary to clean up the hole. Had this been a rough casting both inside and out, I would have indicated on the outside but since it had previously been machined I really wanted to get everything lined up with what was done before.

[@motel29]

+Keith Rucker - VintageMachinery.org Good question and Great answer. Thx

[@adrewfis925]

For the love of Christ compels us, because we judge thus: that if One died for all, then all died; 15 and He died for all, that those who live should live no longer for themselves, but for Him who died for them and rose again. 16 Therefore, from now on, we regard no one according to the flesh. Even though we have known Christ according to the flesh, yet now we know Him thus no longer. 17 Therefore, if anyone is in Christ, he is a new creation; old things have passed away; behold, all things have become new. 18 Now all things are of God, who has reconciled us to Himself through Jesus Christ, and has given us the ministry of reconciliation, 19 that is, that God was in Christ reconciling the world to Himself, not imputing their trespasses to them, and has committed to us the word of reconciliation. 20 Now then, we are ambassadors for Christ, as though God were pleading through us: we implore you on Christ’s behalf, be reconciled to God. 21 For He made Him who knew no sin to be sin for us, that we might become the righteousness of God in Him. 2 Corinthians 5:14-21

[@miketims6877]

Would have been nice to actually see the dial indicator instead of a glare on the dial face!

[@jerrypeal653]

That was boring but it wasn’t.

[@jonka1]

Sadly another example of your confusion disguised as an instructional video. Given that the bore is worn 20thou in one direction you should have aimed for rough equality side to side and 20thou difference top to bottom but you didn't do that. Then you pass off the obvious run out as unimportant because you can't work out how to deal with it.