80% milling question

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  • MigraineMan

    Defenestration Specialist
    Jun 9, 2011
    19,291
    Frederick County
    There's nothing magical about jigs - they just make the process easy. There are plenty of dimensioned drawings available, and you just need to take your time and confirm your measurements. A DRO makes it easier, but you can count turns and read distances off the handwheel graduations (was done that way for a loooonng time.)

    Probably the most difficult element is getting a good reference from the front takedown pin location (everyone seems to use that as a datum.) You can insert a piece of drill rod, a metal dowel pin, or a close-fitting drill bit and use an edge-finder to pick up the edge, then offset back to the center. Slightly fussy, but works well.

    Since you appear to be a machinist, you know how set up time eats up your time. Since I am now retired, I am willing to buy something rather than taking the time to make it. My time is more important since I don't have as much left as I used to. :lol:

    Finally made the commit to upgrade the manual mill to a digital readout (DRO.) Should make machining much more pleasant and productive.

    To start, I pretty much took the pistons out. Stripped the table down to the frame (which means I will need to spend several hours re-tram-ing the thing to get it straight and square again.) Z-axis went first, then the Y-axis, and finally the X.

    Seems to be working as expected. I am pleased. Started at 9:30 this AM, so yeah, 12h to upgrade. I am tired.
     

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