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  • Double angle cutter

    I'd like to mill a block to fit the V-ways on my 10" Logan. I've seen similar people do this when making carriage stops etc.. I tried doing this with a 4-flute end mill on the lathe (don't have a mill) and the work angled 45* .. It worked but it's not up to snuff. It doesn't fit very well. How do people normally cut these?

    Ken-

  • #2
    Ken,

    This is how I do mine. I cut them with an end mill using the mill (or lathe) like you did. In addition, I also cut a small vertical grove at the bottom of the "V". This vertical grove is cut using a 1/8" end mill and allows room to scrape them in to any fit your heart desires!

    Don't have a scraper? I'll show you how to make one with the materials that you have in your shop. Actually, this is a good project if you want an introduction into scraping. You can even "frost" the sides!
    ____________________



    [This message has been edited by Mike Burdick (edited 02-15-2006).]

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    • #3
      I'd do it on my milling machine, but basically the same way. On the milling machine there is also the option of tilting the head, of course.

      Your problem is probably lack of rigidity in the setup, which is sort of inherent whenever you try to do milling on a lathe.
      ----------
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      • #4
        "which is sort of inherent whenever you try to do milling on a lathe."

        Not always...

        Free software for calculating bolt circles and similar: Click Here

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        • #5
          I HAVE done that with an end mill in a Logan using a Palmgren adaptor. Worked fine.

          Yes it is somewhat bouncy, so don't take big cuts.

          Use the biggest end mill you have, so as to take final cut in one pass. That way it is at 90 deg.

          The Logan has a flat at the top of the V, so you don't maybe HAVE to cut the relief, but I would (and did).


          Possible problems:

          If your machine is NOT made with V at 90 deg, it may not fit right. That could happen if it was re-ground, since I think they were 90 deg when made. Mine fits, anyhow.

          If your V-cut is too deep, you will ride on the flat and not snugly fit the V. Then you just trim down the bottom to suit.
          1601

          Keep eye on ball.
          Hashim Khan

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          • #6
            Do it Mike! I'd love to see something hand scraped, especially a project like this. Since its a project on top of my "to do" list when I get my new lathe set up.

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            • #7
              I looked at this last night and it looks as if the v-way is not exactly 90deg or a combination of the two. I've varified that it is not ridingon the top of the v-way. I guess I could use a 1/8 or 1/4 2 flute and do each angle separate.

              Ken-

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              • #8
                Jobs like this are easily done in a shaper too!!
                Doug

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                • #9
                  <font face="Verdana, Arial" size="2">Originally posted by kenrinc:
                  I looked at this last night and it looks as if the v-way is not exactly 90deg or a combination of the two. I've varified that it is not ridingon the top of the v-way. I guess I could use a 1/8 or 1/4 2 flute and do each angle separate.

                  Ken-
                  </font>
                  Double-check. My Logan is right on a 90, so unless yours looks re-done there is a question. And the beds for 10" and 11" at least, are same dimensions. I have a 10".

                  There is NO light or space under the 90 deg cut using an end mill on mine. Two different holders, made at different times, neither one scraped.

                  1601

                  Keep eye on ball.
                  Hashim Khan

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                  • #10
                    So my guess is that the cutter is walking. The milling setup I have is less than rigid so my guess is that it's just not cutting straight. It seem to cut better when I increased the speed and took a bit lighter cut. I need to check the z axis on the mill attachment. I have a feeling it's not straight up and down.

                    Ken

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