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  1. #1
    Join Date
    Apr 2008
    Location
    Perth
    Posts
    289

    Default Bin Fodder or Repairable

    Hello Blokes

    A few years back I bought a ML7 Myford off a chap to use as a second lathe. Before the money was handed over, I had him show me the thing working, turning some rod down making chips using a HSS tool, no probs, everything worked & functioned, I twiddled the knobs so to speak, parted with the cash and loaded it up on the ute for home.

    The lathe sat unused for 3 years, covered with a sheet and occasionally inspected, work, health and life crisis got in the way of using it, hell, we all been there at some point in our life.

    Yesterday, I decide to get this thing set up and working, noticed the compound slide wason the sticking side, so I pulled it apart and this is what I discovered. Now, not saying the previous owner did the said milling of the dovetail ways, he had a workshop of bigger equipment, lathes, mills, shapers and the like and I figured he was not the type of bloke to butcher, and its sure as hell was not me either. ( for those you have had that thought already).

    You can see the underside of the top slide has large gouges along part of its length, I think that was caused by the area that has pitting on the dovetail, particales of cast iron breaking free. The dove tail has been milled, you can see the marks of the cutter, it was a head shaking moment for me when I seen it. My question is, can it be repaired, or is it bin fodder.

    Milled & pitting.jpgSlide gouges.jpgDD

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  3. #2
    Join Date
    Jul 2010
    Location
    Melbourne
    Posts
    7,775

    Default

    What makes you so sure it didn't leave the factory like that?
    I'd say its a casting flaw.

    Scrape in if you like.

    Stuart

  4. #3
    Join Date
    Oct 2009
    Location
    Upwey VIC
    Posts
    95

    Default

    Dingo,

    Looks like a new Chinese lathe slide....

    I think a bit of careful scraping should bring it up to scratch (couldn't help that one).
    The angled faces of the dovetail may be more important in creating a smooth and precise action of the slide, as long as there aren't any excessively high or low areas on the flat area shown.

    Andrew.

  5. #4
    Join Date
    Aug 2011
    Location
    Melbourne
    Posts
    2,951

    Default

    I would be inclined to spend some time on it to long before deciding to throw it!

    Simon
    Girl, I don't wanna know about your mild-mannered alter ego or anything like that." I mean, you tell me you're, uh, super-mega-ultra-lightning babe? That's all right with me. I'm good. I'm good.

  6. #5
    Join Date
    Aug 2008
    Location
    near Rockhampton
    Posts
    4,304

    Default

    The hole is a casting flaw... The parallel scratch marks are just normal wear and tear marks...

    Time to learn to scrape..
    Light red, the colour of choice for the discerning man.

  7. #6
    Join Date
    Oct 2011
    Location
    Adelaide
    Age
    57
    Posts
    3,149

    Default

    I'd get a dremel or similar in just to lightly dress the pit (so there are no proud edges and nothing will break off). Run a stone over the scrape marks to again remove high spots and that will get you going. Scraping can be done for a better fit but provided there are no high spots it will still function*.

    *Well, as well as it would have without the pit...

    Michael

  8. #7
    Join Date
    Oct 2011
    Location
    sydney
    Posts
    880

    Default

    I wouldn't worry about it at all. The hole is a minor casting defect and the scratches are normal wear and tear. Leave it as is, unless your turning something that's really critical.

    Ben.

  9. #8
    Join Date
    Aug 2007
    Location
    Melbourne
    Age
    67
    Posts
    1,417

    Default

    Quote Originally Posted by Dingo Dog View Post
    Hello Blokes

    A few years back I bought a ML7 Myford off a chap to use as a second lathe. Before the money was handed over, I had him show me the thing working, turning some rod down making chips using a HSS tool, no probs, everything worked & functioned, I twiddled the knobs so to speak, parted with the cash and loaded it up on the ute for home.

    The lathe sat unused for 3 years, covered with a sheet and occasionally inspected, work, health and life crisis got in the way of using it, hell, we all been there at some point in our life.

    Yesterday, I decide to get this thing set up and working, noticed the compound slide wason the sticking side, so I pulled it apart and this is what I discovered. Now, not saying the previous owner did the said milling of the dovetail ways, he had a workshop of bigger equipment, lathes, mills, shapers and the like and I figured he was not the type of bloke to butcher, and its sure as hell was not me either. ( for those you have had that thought already).

    You can see the underside of the top slide has large gouges along part of its length, I think that was caused by the area that has pitting on the dovetail, particales of cast iron breaking free. The dove tail has been milled, you can see the marks of the cutter, it was a head shaking moment for me when I seen it. My question is, can it be repaired, or is it bin fodder.

    Milled & pitting.jpgSlide gouges.jpgDD
    Mill finish, that is how the compound base is when new. Myford is just a good quality hobbylathe. Not a Schaublin or a Hardinge that costs 5 times more.

  10. #9
    Join Date
    Dec 2007
    Location
    Melbourne
    Posts
    3,277

    Default

    It's complete rubbish, chuck it..in the post to me that is, as spare parts for mine

    Nothing out of the ordinary there. Give it a light stoning, clean with kero, some fresh oil and play around with the gib strip and see if it feels any better.
    ..Live a Quiet Life & Work with your Hands

  11. #10
    Join Date
    May 2011
    Location
    Murray Bridge SA
    Posts
    3,331

    Default

    It's complete rubbish, chuck it out to me .. I don't have a decent lathe. PM sent for address
    I wish my Chinese POC mini lathe was that nicely machined. As others have already stated a bit of work and deburr, it would be a top notch lathe. Certainly good quality.
    Kryn

  12. #11
    Join Date
    Sep 2012
    Location
    Yorkshire UK
    Posts
    733

    Default

    I concur with previous comments

    As a Myford owner I can confirm that there is little to be concerned about. As long as the gibs are clean and undamaged. I would wipe off the old oil and muck, give things a good coat of oil and reassemble it. Adjust the gibs so that it moves smoothly without binding. Then get on with making chips

  13. #12
    Join Date
    Apr 2008
    Location
    Perth
    Posts
    289

    Default The Myford

    Thanks Blokes, for all the info passed on, I will do as what as been suggested. Give it a good oiling and put it back together.

    DD

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