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  1. #1
    Join Date
    Aug 2011
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    Default DRO for the quill

    Hi all,

    I'm about to purchase a DRO for the quill travel on my mill. I'm thinking of one of these Mill Lathe Vertical DRO Digital readout 150mm/6" *NEW* | eBay

    To satisfy my needs for accurate quill downfeed and as a part remedy for the quill backlash. My main question is this:

    Is a 150mm vertical DRO going to have enough travel for my quill which has a 130mm travel?

    I'm assuming I will loose some travel once it gets mounted inside the head? Should I go a 200mm DRO or will the 150mm be sufficient?

    What do others have that have installed this type of DRO?

    Cheers,

    Simon

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  3. #2
    Dave J Guest

    Default

    Hi Simon,
    Fed on here did his if I remember right.
    I would go with one like this bellow that can be cut to length easy. This way you can put the read out where it's easy to see.
    This on is from Australia as well so postage will be quick, a bargain at $40 posted
    DRO Digital Readout Display With 600mm / 24" Scale Kit | eBay

    Another one from CTC

    150MM 6" HORIZONTAL DIGITAL SCALE DRO MILL LATHE MEASURING TOOL #L1201 | eBay

    Dave

  4. #3
    Dave J Guest

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    I will just add be quick as there is only 2 and a lot of non members read this forum as well.

    Dave

  5. #4
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    Default

    There has been a bit of discussion on the one that ozemstore sells on IAP, it is also sold by Grizzly.

    Reports are that these DROs are very slow reading, I was going to buy some for my mill but decided to hang off when I read that.

    For my quill on the DM45 I used a 150mm digital vernier, works fine, did a WIP on it somewhere.

    Fed

  6. #5
    Join Date
    Apr 2010
    Location
    ringwood vic
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    Default

    G'Day Simon,
    I don't know which machine you have, but a 150mm unit fitted my RF31, in fact I needed cut about 50 mm off. Rather than stuff around with the original front plate I ditched the useless, rattly depth stop and made a new plate from scratch. And the cutesy wooden box it came in was recycled as a collet rack.
    Regards,
    Martin

  7. #6
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    Default

    Big Shed, what is IAP ?, would like to have a read, I have 2 of these fitted to the Z and Y axis of my RF-25 and they seem to be ok.

    Cheers Shane

  8. #7
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    Quote Originally Posted by Auskart View Post
    Big Shed, what is IAP ?, would like to have a read, I have 2 of these fitted to the Z and Y axis of my RF-25 and they seem to be ok.

    Cheers Shane
    See this thread

    X and Y axis lathe DRO's - Page 2 - International Association of Penturners

    there are some others there.

    My original question there was prompted by reports on one (or more) of the US metal working forums. Can't remember which one in particular, but I normally read HSM, HMEM, MM and HM.

  9. #8
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    Thanks Big Shed, the article talks about an erratic reading, I had that problem at the start so I removed the alluminium bar and turned it around 180 degrees (end to end, not side to side) and all worked fine, doesn't seem to be a problem with slow readings. Will post a few pics when I get a chance.

    Thanks Shane.

  10. #9
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    Hi all,

    I had seen the one on ebay from Ozimstore Dave but now Big Shed got me spooked! I decided to go for the 150mm vertical from a UK distributor.

    Also the one from CTCtools is a horizontal one, If they had have sold a vertical one then they would have had me!
    Hey toolman, that job looks pretty good. Well done!
    Thanks for your input guys.

    Simon

  11. #10
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    Quote Originally Posted by Auskart View Post
    Thanks Big Shed, the article talks about an erratic reading, I had that problem at the start so I removed the alluminium bar and turned it around 180 degrees (end to end, not side to side) and all worked fine, doesn't seem to be a problem with slow readings. Will post a few pics when I get a chance.

    Thanks Shane.
    Shane, you must have stopped reading after the first sentence?

    I quote:

    Actually a little dissapointing! The x-y 24" unit is going back since it's always giving me erratic measurements. I think the sensor is faulty.

    The cross slide unit is working but it's SLOW and if you are moving the handwheel in too fast, it doesn't keep up. I have to stop, go back a little then contineu to get a good reading.

    Not really pleased with them so far.

  12. #11
    Join Date
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    Default

    Big Shed, read all that, as I said mine seem to be reading fine. He may have got a couple of faulty one's. (it happens)

    Cheers Shane.

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