My new Harrison lathe

  1. spencer 427

    spencer 427 Member

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    Its 11 inches across. It's a hard drop of iron for sure. It's a lot better than it was definitely.
     
  2. spencer 427

    spencer 427 Member

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    And now to do it all again. 20191205_131549.jpg
     
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  3. RobCox

    RobCox Member

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    Your bluing compound shows up a lot better than the Stuarts Micrometer blue that I've been using recently. Do you mind me asking what magic compound is it that you use to get such a visible result?

    Rob
     
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  4. spencer 427

    spencer 427 Member

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    I use dykem blue. It's a lot easier to use than the Stuart's blue. Its expensive but I buy it from rgd tools. It's good stuff.
     
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  5. Pete.

    Pete. Member

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    Get some diamant tuschierpaste
     
  6. Shox Dr

    Shox Dr Chief Engineer to Carlos Fandango

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    Lets see your tools:scared:. Scrappers that is
     
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  7. spencer 427

    spencer 427 Member

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    Some of my tooling. 20191205_172204.jpg
     
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  8. spencer 427

    spencer 427 Member

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    Finally got the flats done on the cross slide. What a nightmare job. 20191208_104026.jpg 20191208_104212.jpg
     
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  9. Shox Dr

    Shox Dr Chief Engineer to Carlos Fandango

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    That must take some time, using hand scrapers?
     
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  10. spencer 427

    spencer 427 Member

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    A couple of days solid..
     
  11. Pete.

    Pete. Member

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    Took a lot longer than normal because that iron is HARD. Blunts the scraper in no time.
     
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  12. spencer 427

    spencer 427 Member

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    Literally every pass. There was a good amount of wear as well. I got it 95 percent good.
     
  13. Shox Dr

    Shox Dr Chief Engineer to Carlos Fandango

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    And if it had been not as hard?
     
  14. Pete.

    Pete. Member

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    If it was a nice fine grained meehanite probably a good few hours. A lot less with a Biax of course :D

    Plus you have to remember that Spencer is still on his learning curve (as am I except I'm further along).
     
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  15. spencer 427

    spencer 427 Member

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    Totally agree pete. I still a beginner and your a long way ahead of me. I still make mistakes and I can see them in my work. But it's hard work but I do enjoy doing it.
     
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  16. Bill Edwards Member

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    Obviously you're doing a good job, well done.
    I also admire your dedication! Not just the time but the sheer amount of work/effort/days upon days of scraping away.

    I reckon you will have a lovely lathe when it's all done - I realise it's been built to remove big amounts of material rather than be accurate, but with the way you're finishing it I expect the result will be a very, very accurate machine in the end?
     
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  17. Bill Edwards Member

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    Just a question as I'm not knowledgeable on scraping, but when a part is badly worn and going to require a huge amount of scraping is there any reason why you can't use a mill to remove most of the required material, or a surface grinder, then come in with a scraper for the finishing bit when there's not that much metal that needs removing?
     
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  18. Pete.

    Pete. Member

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    Absolutely. If you have more than a couple of thou to remove and you can fit it onto a mill/lathe/grinder/planer then that's what you should do - after carefully evaluating the wear and deciding where to machine. You want your scraping to be minimal, if you have the choice. It's hard to mill off as little as a thou, but it's hard work scraping that much.
     
  19. ronan

    ronan Forum Supporter

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    dublin
    You can get electric powered scrapers, but they are very expensive and obviously not worthwhile if you are only scraping one machine.
     
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  20. spencer 427

    spencer 427 Member

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    Thank bill. I am hoping once finished the machine should run and perform nice and should be a pleasure to operate.
     
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