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  1. #1
    Join Date
    Aug 2015
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    QLD
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    735

    Default Peeling the table to straighten...

    If I hadn't seen the before and after dail readings I wouldn't have believed it.

    A simple tap with a hammer and punch along the top of a mill table base takes a lot of the banana out of it...

    (Fast fwd to 6.30) https://m.youtube.com/watch?v=9IVMFPBxzH8

  2. #2
    Join Date
    May 2011
    Location
    Murray Bridge S Aust.
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    71
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    5,942

    Default

    Thanks for the video clip. Incredible that a few punches will bend it, he wasn't hitting it that hard either. He must have done a few of them to know where and how hard to hit!!! Wonder if that would work for a worn lathe bed?
    Kryn
    To grow old is mandatory, growing up is optional.

  3. #3
    Join Date
    Jan 2012
    Location
    Hinchinbrook
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    112

    Default

    Anyone know what the yellow dye is? And does? Ive never seen that used before

    Cheers Phil

  4. #4
    Join Date
    Jun 2008
    Location
    Victoria, Australia
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    74
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    5,080

    Default

    Quote Originally Posted by 12bolts View Post
    Anyone know what the yellow dye is? And does? Ive never seen that used before

    Cheers Phil
    That's yellow canode, all it does is provide a better colour contrast for the blue. Canode is also water soluble which makes clean up a bit easier. But who doesn't like blue stained hands. makes you feel like you've achieved something.

  5. #5
    Join Date
    Aug 2010
    Location
    Near Bendigo, Victoria, AUS
    Age
    72
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    3,102

    Default

    Actually, peening is used to straighten lots of things - even hardenend steel items. It's my preferred way to get gibs straight, rather than scraping them straight, because the latter removes material. I'll still srape the flat, of course.
    I've also seuccessfully used peening the get a slight bend out of an I-beam. It required some fairly heavy blows, but really successful. It puzzles peope who watch, because you seem to be hitting on the wrong side... intuitively... but it's quite easy to visualise the metal stretching on the side you are hitting.
    Cheers, Joe
    retired - less energy, more time to contemplate projects and more shed time....

  6. #6
    Join Date
    Nov 2008
    Location
    North Brisbane. Qld. Australia
    Age
    70
    Posts
    1,511

    Default

    Believe it or not, that is the first scraping video I have ever watched. Loved it. May even try scraping on the Hercus Mill one day. Thought peeling sounded a bit strange and should have been peening which I have heard of before.
    Nev.

  7. #7
    Join Date
    Aug 2015
    Location
    QLD
    Posts
    735

    Default

    Strange. I thought I'd written peening. My auto spell checker even tried to make it "preening" this time.
    Perhaps a mod can fix.

  8. #8
    Join Date
    Aug 2015
    Location
    QLD
    Posts
    735

    Default

    Quote Originally Posted by SurfinNev View Post
    Believe it or not, that is the first scraping video I have ever watched. Loved it. May even try scraping on the Hercus Mill one day. Thought peeling sounded a bit strange and should have been peening which I have heard of before.
    This advertisement is likely from a poster here...

    *****

    http://www.gumtree.com.au/s-ad/elwood/miscellaneous-goods/other-students-for-metal-scraping-course-/1136480700

    Vintage lathe, milling machine, metal shaper, planer, surface grinder. Whatever.



    I am seeking other students for a metal scraping class in Melbourne.


    Google "melbourne scraping class" to see videos and comments on the previous ones. There have been 5 courses so far and I am looking to get the students together for a 6th course. Pretty much the demand for metal scraping in part of the world has been exhausted after 5 courses so the trainers have said if I get the numbers they'll run a 6th course.


    I'm not the trainer - I am aiming to be a student and learn this craft. I have some old machine tools I am restoring (1941 South Bend 10L lathe, 1928 Brown and Sharpe Surface Grinder, 1950's Alba 10" shaper) and they could do with some love on the sliding ways and alignment.


    The course is an entire weekend. Lunch provided. Cost is an estimated $500 - though if the student numbers support it, it may be less - but budget $500.


    There is no date set as yet. When there is enough interest to run a course a date will be firmed up. Hopefully 2017 will see it done. I already have a fair number of other students interested but need more.


    The course assumes no previous experience. I have no scraping experience.


    So, if you want to learn scraping to start restoring those old ways on your lathe or mill or grinder contact me here with your basic contact info - name and email and I'll get you on my list. I'm not taking any payments - this is not a credit card scam.

  9. #9
    Join Date
    Jun 2008
    Location
    Victoria, Australia
    Age
    74
    Posts
    5,080

    Default

    Quote Originally Posted by jhovel View Post
    Actually, peening is used to straighten lots of things - even hardenend steel items. It's my preferred way to get gibs straight, rather than scraping them straight, because the latter removes material. I'll still srape the flat, of course.
    I've also seuccessfully used peening the get a slight bend out of an I-beam. It required some fairly heavy blows, but really successful. It puzzles peope who watch, because you seem to be hitting on the wrong side... intuitively... but it's quite easy to visualise the metal stretching on the side you are hitting.
    Wouldn't the way he did it on the mill table simply cause the top to bow, ok the dovetails got a bit straighter, presumably at the expense of bowing the top?

  10. #10
    Join Date
    Oct 2007
    Location
    Sydney
    Posts
    3,112

    Default

    Quote Originally Posted by RayG View Post
    Wouldn't the way he did it on the mill table simply cause the top to bow, ok the dovetails got a bit straighter, presumably at the expense of bowing the top?
    Yes that's the idea. See how the table was pivoting, it was high in the middle. The Dovetails were similarly not straight. Peening straightened both.

  11. #11
    Join Date
    Jun 2008
    Location
    Victoria, Australia
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    74
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    5,080

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    Quote Originally Posted by Pete F View Post
    Yes that's the idea. See how the table was pivoting, it was high in the middle. The Dovetails were similarly not straight. Peening straightened both.
    Yep I see it now, I missed the spin test.

  12. #12
    Join Date
    Jan 2011
    Location
    Far West Wimmera
    Age
    63
    Posts
    4,049

    Default

    During one of the videos that came from Keith Rucker's (YouTube) scraping class it was mentioned that the yellow die cuts the reflection/glare from the bare metal and so makes the blue easier to see.

    Those videos were my first. A number of YouTube creators attended this class and produced videos.

    Dean

  13. #13
    Join Date
    Jun 2008
    Location
    Victoria, Australia
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    74
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    Default

    Quote Originally Posted by RayG View Post
    That's yellow canode, all it does is provide a better colour contrast for the blue. Canode is also water soluble which makes clean up a bit easier. But who doesn't like blue stained hands. makes you feel like you've achieved something.
    Hi Eskimo, what did you want pictures of? Yellow canode or blue hands?

  14. #14
    Join Date
    Jul 2006
    Location
    Athelstone, SA 5076
    Posts
    4,255

    Default

    Quote Originally Posted by RayG View Post
    Hi Eskimo, what did you want pictures of? Yellow canode or blue hands?
    blue hands of course
    I know what blued hands look like but some others may not so a pic would be great for them

  15. #15
    Join Date
    Jun 2008
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    Victoria, Australia
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    74
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    5,080

    Default

    Quote Originally Posted by eskimo View Post
    blue hands of course
    I know what blued hands look like but some others may not so a pic would be great for them
    Scraping in reality looks like this, if you find someone with clean hands, they just aren't trying hard enough.


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