1. #1
    Hi Lads, first post here goes!


    A few years ago I decided to convert a Chester 626 milling machine to CNC, actually about six years ago. The project was put on hold due to more pressing shop projects, so today I thought I may
    as well knock the dust off the machine and get back on and finish the project.


    The 626 mill.
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    The build quality of my 626 mill is shocking and converting it to CNC is the kindest thing for it lol.

    A few examples of the quality of this mill.
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    Lead screws
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    Ways.
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    I could go on, but I will spare you. So this is my attempt to polish a turd so to speek


    Cheers Rob

  2. #2
    Moving on,

    I decided to straighten out the knee, may as well start somewhere.

    Opening up the casting to take the new Y ball nut mount.
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    The Z axis nut mounting needed looking at, the casting in this area was a tad wonky

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    And I ended up being a wee bit tight for space, with new Y ball nut and needing to fit the Z pully in.

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    So out with the grinder and the ofending lump of casting was removed.

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  3. #3
    Next up, the two spigots of casting were machined up into something more usable.

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    Now I have something I can work with.

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    Plenty of clearance for the Y nut and Z pully.

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  4. #4
    So now I need something to carry the Z axis lead screw bearings,

    A suitable chunk of steel was chosen to make the carrier.
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    A tad of machining on the lathe,

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    And a bit mill work,

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    Last edited by RobWilson; 4 Weeks Ago at 01:00 PM.

  5. The Following 2 Users Say Thank You to RobWilson For This Useful Post:


  6. #5
    Beautiful work Rob - will be watching this one with much interest.

  7. #6
    Nicely done.
    Building a CNC machine to make a better one since 2010 . . .
    MK1 (1st photo), MK2, MK3, MK4

  8. #7
    Hi Washout & Routercnc,

    Thanks for the comments and compliments


    Cheers Rob

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