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  1. #1
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    Default Can I achieve this?

    Is it possible to achieve a chamfer like the one pictured, without a compound slide on the lathe?
    Cheers.

    Adaptor plate 2 .jpg

  2. #2
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    You could make a form tool to that chamfur angle but it would be a big cutting area and depending on the rigidity of your lathe would almost certainly cause chatter.

    Other option (If you had one) is a taper turning attachment.

    Others may have different/better ideas


    Simon

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  3. #3
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    Quote Originally Posted by simonl View Post
    You could make a form tool to that chamfur angle but it would be a big cutting area and depending on the rigidity of your lathe would almost certainly cause chatter.
    Other option (If you had one) is a taper turning attachment.
    Others may have different/better ideas
    Simon
    Due to having a very tall tool post, it chattered when cutting that chamfer to the width of a tungsten tip, so that won't work. No taper turning attachment

  4. #4
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    Looks too big for a form tool in one go. You might be able to nibble at it and then dress the surface with some emery strip to get it looking continous.
    If you can persuade your lathe to feed longitudinally and cross at the same time you might come close.

    Michael

  5. #5
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    Quote Originally Posted by Michael G View Post
    If you can persuade your lathe to feed longitudinally and cross at the same time you might come close.
    Michael
    It is fully manual, so no issue with the machine, however, the operators skills are somewhat lacking. It isn't critical that the chamfer looks nice, but it would be nice if it did

  6. #6
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    Default

    I think you need to get your lathe up to scratch then tackle the jobs you need it for.

    Only 3 speeds, no compound slide and a tall wobbly tool post are gunna cause you grief every time you just look at that lathe.

    cheers, shed

  7. #7
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    Default

    Rotary table and a milling machine? Is it critical that the chamfer be that big?

    I've never seen a taper turning attachment that could do 45 degrees, maybe 20 max

  8. #8
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    Quote Originally Posted by caskwarrior View Post
    Rotary table and a milling machine? Is it critical that the chamfer be that big?

    I've never seen a taper turning attachment that could do 45 degrees, maybe 20 max
    Yea. Good point!

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  9. #9
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    Quote Originally Posted by shedhappens View Post
    I think you need to get your lathe up to scratch then tackle the jobs you need it for.

    Only 3 speeds, no compound slide and a tall wobbly tool post are gunna cause you grief every time you just look at that lathe.

    cheers, shed
    3 speeds is a bit of a pain.
    The tall tool post is the price I paid for a lathe that will turn 250mm (a bit more actually) diameter material. It isn't exactly wobbly, but it isn't as rigid as a short one would be.
    This is the first time I have actually needed a compound slide in the 20 years of playing around with it, and as luck would have it, I have managed to find a solution this time
    Adaptor plate 3.jpg

  10. #10
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    Default

    Hi Ptrott,

    If you are using tooling like you show in that picture I'm not surprised that you are having a hard time !

    The tool should be firmly clamped by the three screws in the tool post, and the tool post rotated to suit the work !
    In this case the chamfer angle.

    I'll take a picture of the tool that I use to create and angled surface. I could cut a 45 degree angle up to an inch wide without a problem, and my lathe is much weedier than yours.
    Best Regards:
    Baron J.

  11. #11
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    Quote Originally Posted by BaronJ View Post
    Hi Ptrott,

    If you are using tooling like you show in that picture I'm not surprised that you are having a hard time !

    The tool should be firmly clamped by the three screws in the tool post, and the tool post rotated to suit the work !
    In this case the chamfer angle.

    I'll take a picture of the tool that I use to create and angled surface.

    Yeah, looks a bit sus in that pic, but what you can't see is a well clamped right hand tool bit right up close to the job, supporting the chisel. I did the curved chamfer exactly as one would on a wood lathe, moving the tool bit to support the chisel as required.
    Looking forward to your pics.
    Cheers

  12. #12
    BobL is offline Member: Blue and white apron brigade
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    Default

    The length of tool steel hanging out in the breeze or distance between the workpiece and the tool post is also asking for a lot of trouble.
    I would make that as short as possible ie <10mm

  13. #13
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    Hi Guys,

    Sorry about the delay and running off earlier, I had to visit the local vampire !

    Anyway here are the pictures of one of the two tools that I made, one to cut 25 mm and this one in the pictures 35 mm. Both made from 3/8" inch (9 mm) thick, 1,1/2" (38 mm) wide gauge plate, hardened and sharpened.

    15-10-2019-3.JPG 15-10-2019-1.JPG 15-10-2019-2.JPG
    They were originally made to do circular dovetails.
    Best Regards:
    Baron J.

  14. #14
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    Default

    Nice tool , if only I had the H.P. to use it.
    I looked up the specs for my lathe, and it is only 0.5HP, which seems a bit silly given that it can turn up to 360mm diameter.
    I wonder if there was actually a sound reason for that, or if it was just a cost thing

  15. #15
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    Did you get this lathe new or second hand?
    Without knowing but looking at some of your earlier photos it looks like it might be a lathe/ mill combination machine, if it was it would explain the height of your headstock and the swing it has, it could also explain why your tool post is at the rear and also the chrome ring attached to the headstock.

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