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  1. #1
    Join Date
    Apr 2020
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    Vancouver
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    Default 260 ATM Restoration

    This is my first foray into metal work, but have been interested for quite a while and couldn't pass up on the price.

    Looks like it may have been run into or dropped, as the cross slide handle is bent and the tailstock is destroyed. The 3 phase motor may be fried as well, but will be checking that later. Some dings on the ways, but the wear doesn't feel too deep with the finger nail test. All gears are meshing well, longitudinal and cross feeds working well with hand cranking.

    Does the tailstock look repairable? I rotated the crack to show the damage, but it does fit back in place well.

    Any advice and feedback very much appreciated as I am a total newbie. Slowly reading through the Text Book of Turning.

    IMG_20200423_131242.jpgIMG_20200423_131333.jpgIMG_20200423_131319.jpgIMG_20200423_131306.jpgIMG_20200423_131255.jpgIMG_20200424_130355.jpgIMG_20200424_130427.jpg

  2. #2
    Join Date
    Sep 2009
    Location
    Sydney
    Posts
    666

    Default

    I repaired a cast iron bandsaw wheel by TIG brazing it with silicon bronze. Seemed to work well. Sure you could do the same by grooving out the crack.

    Nothing to lose. Where are you?

  3. #3
    Join Date
    Apr 2020
    Location
    Vancouver
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    Default

    Thanks, I'm in Vancouver, Canada. I don't have have a TIG setup, but it's on the wish list.

  4. #4
    Join Date
    Sep 2009
    Location
    Sydney
    Posts
    666

    Default

    Ah, a bit far to come to Sydney, otherwise I’d happily have a go for you. See if you can prep the part yourself and take it to a fab shop. Nothing to lose.

  5. #5
    Join Date
    Apr 2020
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    Vancouver
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    Default

    That would be quite a trek, thanks for the offer!

  6. #6
    Join Date
    Nov 2017
    Location
    Geelong, Australia
    Age
    57
    Posts
    2,651

    Default

    There’s 2 parts to that repair - getting it stuck back together then most likely some machining to get it all cleaned up and working again afterwards.
    Certainly within the realm of a home workshop but given you are a stone cold newbie with machining probably not a job you want to start off with.

    To get it repaired at a normal engineering shop isn’t likely to be cheap.

    Do you have any steam engine or vintage machinery organizations in your area? Possibly they may either have someone who might take on the repair in exchange for a donation etc, or can at least point you towards a business that is familiar with that sort of repair at a reasonable cost.

    In regards to prep before you take it somewhere I’d suggest just disassemble, paint strip and degrease as much as possible.
    Don’t start vee-ing out the cracked area as you probably won’t do it how the repairer would and may make it worse.

    Steve

  7. #7
    Join Date
    Apr 2020
    Location
    Vancouver
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    Default

    That's a really good idea! My brother volunteered at the local model railway club previously so may have some contacts there still.

  8. #8
    Join Date
    Jan 2009
    Location
    Holbrook, NSW
    Age
    73
    Posts
    490

    Default

    Quote Originally Posted by spoot View Post
    This is my first foray into metal work, but have been interested for quite a while and couldn't pass up on the price.

    Looks like it may have been run into or dropped, as the cross slide handle is bent and the tailstock is destroyed. The 3 phase motor may be fried as well, but will be checking that later. Some dings on the ways, but the wear doesn't feel too deep with the finger nail test. All gears are meshing well, longitudinal and cross feeds working well with hand cranking.

    Does the tailstock look repairable? I rotated the crack to show the damage, but it does fit back in place well.

    Any advice and feedback very much appreciated as I am a total newbie. Slowly reading through the Text Book of Turning.

    IMG_20200424_130427.jpg
    might be easier to order a new top casting, if your budget will go that far. Always an option if all else fails. Drop me a personal message if you need to know anything else.
    Mal AMH

  9. #9
    Join Date
    Apr 2020
    Location
    Vancouver
    Posts
    11

    Default

    I did see some on AMH, but it may be a bit cost prohibitive shipping it to Canada.

    Sent from my Pixel 3 XL using Tapatalk

  10. #10
    Join Date
    Apr 2020
    Location
    Vancouver
    Posts
    11

    Default

    Is there any resource that shows the specifications of for things like

    -Tail stock taper
    -Spindle chuck thread
    -Tool post gib size

    etc.

    Thank for all the help so far!

  11. #11
    Join Date
    Apr 2020
    Location
    Vancouver
    Posts
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    Default

    Started to disassemble the tailstock today. The bottom looks to have even more wear than the ways for some reason. Will this be a problem since the center is now sitting lower than the spindle center? Not sure if I missed a height adjustment screw.
    IMG_20200427_191132.jpg

    The taper in the quill also looks pretty chowdered up.

    IMG_20200427_194056.jpg

  12. #12
    Join Date
    Jun 2007
    Location
    sydney ( st marys )
    Age
    64
    Posts
    4,887

    Default

    Tailstock taper M/T 2
    Spindle thread 1 3/4" x 8 tpi
    Are you asking about the gib for the compound or cross slide, the tool post does not have a gib.

  13. #13
    Join Date
    Apr 2020
    Location
    Vancouver
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    Default

    Thanks!

    Asking about the bottom of the tool post. Was looking at quick change ones, but not sure what size fits.

  14. #14
    Join Date
    Jun 2007
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    sydney ( st marys )
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    64
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    Default

    Use the AXA type 101 for the quick change , piston or wedge style, the piston type will generally be cheaper. For what the lathe is the piston type will work just as good as the wedge type, you will need to either make or buy a replacement hold down stud to replace the stud Hercus use in their compound.

  15. #15
    Join Date
    Apr 2020
    Location
    Vancouver
    Posts
    11

    Default

    All the parts disassembled
    IMG_20200427_191222_1.jpg

    Broken spindle screw. I'm considering welding on the end
    IMG_20200427_194155.jpg

    Got all the parts soaked in xylene over night. Top layers have come off, but looks like the original green is holding on. I'll try some lye next.

    Decided to see if the chuck was stuck, so I put the back gear on and tried the spin it off by hand. Seemed pretty tight so I cut some rubber, bolted some pipe strapping down. The chuck broke free with a gentle tap.

    IMG_20200429_164633.jpg

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