645 from Retired Machinist.

Got back from Vacation and got to work. I didn’t want to do a tear down but I would not feel comfortable without one. Tore the tables, saddle, lead screw, saddle screw out and cleaned up the knee. Lots of Old grease in oil valleys. However, what I found made me smile. Lots of scrape still there, mostly on the table. The last picture is of the front middle of the table. The scrapes are very light and a small spot with none left.
 

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The knee looks ok but the scrapes are very light to non existent. The saddle looks good but not much of the marks left.. going to call up wells and make an order for some oil zerts and talk to them about the lead screw nut as I think it may be worn.
 

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Cleaned up the lead screw nut. Small portion of thread broken off and looks work compared to
The threads for the saddle screw.
 

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Those are not scraping marks, they are oil flaking cuts, done to make oil available to the entire surface. Without them, the oil squeezes out and metal rubs on metal, causing serious wear. Oil flaking is purposely made quite deep to hold and distribute oil. Scraping is done shallow to support the loading. In the photos I can see where the flaking is worn through in places, and there is deeper wear with a rough surface in those places. That is common in a lathe that has been well used, and the mill should be able to still do good work. It is a MAJOR job to re-scrape a mill, and takes training to do it correctly. You will not be able to watch a few YouTube videos and then make it like new again with a few day's work. Far from it. Use it like it is, keep it very well oiled and adjusted at all times, and enjoy the machine. Lots of good work is done with mills in that condition.
 
Those are not scraping marks, they are oil flaking cuts, done to make oil available to the entire surface. Without them, the oil squeezes out and metal rubs on metal, causing serious wear. Oil flaking is purposely made quite deep to hold and distribute oil. Scraping is done shallow to support the loading. In the photos I can see where the flaking is worn through in places, and there is deeper wear with a rough surface in those places. That is common in a lathe that has been well used, and the mill should be able to still do good work. It is a MAJOR job to re-scrape a mill, and takes training to do it correctly. You will not be able to watch a few YouTube videos and then make it like new again with a few day's work. Far from it. Use it like it is, keep it very well oiled and adjusted at all times, and enjoy the machine. Lots of good work is done with mills in that condition.

Thank you for the knowledge.
 
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Been using the mill from time to time to do small stuff. After reassembling the table I have been keeping it oiled, Push enough in so it comes out the sides of the ways. Kind of afraid to tear the head down as it runs so smooth and quiet. Really enjoying the machine.
 
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