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What size dovetail cutter for making tool holders

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  • What size dovetail cutter for making tool holders

    I purchased a 1/2" dovetail cutter for making the dovetails in some holders I'm making. They are for the phase II bxa. Turns out these won't reach. What size are folks using?
    Thanks

  • #2
    Just use a straight end mill and rotate the work to the correct angle.

    Comment


    • #3
      1 3/8" is what I used, I think, but I've slept since then.....
      I cut it off twice; it's still too short
      Oregon, USA

      Comment


      • #4
        I just checked mine. A 3/4 inch 60 degree cutter is what the BXA needs. Note that on my QCTP holders the edge of the narrowest part of the dovetail (L2 in diagram) was milled off. Without that there was a possibility that the shank of the cutter would hit that lip.

        From Shars: Click image for larger version

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        Last edited by danlb; 06-28-2020, 01:24 AM.
        At the end of the project, there is a profound difference between spare parts and extra parts.

        Location: SF East Bay.

        Comment


        • #5
          Originally posted by danlb View Post
          I just checked mine. A 3/4 inch 60 degree cutter is what the BXA needs. Note that on my QCTP holders the edge of the narrowest part of the dovetail (L2 in diagram) was milled off. Without that there was a possibility that the shank of the cutter would hit that lip.

          From Shars: Click image for larger version

Name:	Toolpost-dia2.jpg
Views:	280
Size:	31.6 KB
ID:	1883707

          Thanks. Every 3/4" cutter I've looked at has a 5/8" shank and I don't have a collet that size. My mill is an ancient index model 40 that uses B&S #9. I have about 5 collets and 5/8" isn't one. I'll continue searching. Thanks

          BTW, I thought BXA and AXA were the same size holder?

          Comment


          • #6
            Originally posted by elf View Post
            Just use a straight end mill and rotate the work to the correct angle.
            Huh?

            Comment


            • #7
              5/8 x 7/16" HSS, in the shaper....
              Sorry, i'll get my coat.....
              Click image for larger version

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              Click image for larger version

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              Click image for larger version

Name:	june - nov 2014 143.JPG
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ID:	1883740

              Comment


              • #8
                Originally posted by challenger View Post

                Huh?
                It's actually better than using a dovetail cutter because it creates a relief in the corner:
                Click image for larger version

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ID:	1883773Click image for larger version

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                Comment


                • #9
                  Originally posted by thaiguzzi View Post
                  5/8 x 7/16" HSS, in the shaper....
                  Sorry, i'll get my coat.....
                  Click image for larger version

Name:	june - nov 2014 133.JPG
Views:	271
Size:	1.62 MB
ID:	1883738
                  Click image for larger version

Name:	june - nov 2014 138.JPG
Views:	269
Size:	1.62 MB
ID:	1883739

                  Click image for larger version

Name:	june - nov 2014 143.JPG
Views:	268
Size:	1.61 MB
ID:	1883740
                  Amen, brother Amen. The only way for Real machinist to go.

                  Sarge41

                  Comment


                  • #10
                    I have a 7" atlas and will probably use it for the holders. I may also use the end mill idea in the vertical mill.
                    Thanks

                    Comment


                    • #11
                      Originally posted by challenger View Post


                      Thanks. Every 3/4" cutter I've looked at has a 5/8" shank and I don't have a collet that size. My mill is an ancient index model 40 that uses B&S #9. I have about 5 collets and 5/8" isn't one. I'll continue searching. Thanks

                      BTW, I thought BXA and AXA were the same size holder?

                      Check https://www.shars.com/3-4-60-degree-hss-dovetail-cutter for a 3/4 inch cutter with 3/8 inch shaft. HSS for $13

                      AXA and BXA are close to the same size, but not quite.

                      Using the picture above...
                      AXA:
                      • H: 0.386"
                      • L1: 1.687"
                      • L2: 1.382"
                      BXA
                      • H: 0.417"
                      • L1: 1.762"
                      • L2: 1.421"
                      Dan
                      At the end of the project, there is a profound difference between spare parts and extra parts.

                      Location: SF East Bay.

                      Comment


                      • #12
                        Originally posted by challenger View Post
                        I have a 7" atlas and will probably use it for the holders. I may also use the end mill idea in the vertical mill.
                        Thanks
                        Blimey!
                        Reminds me of that scene in Pulp Fiction.
                        Hey MF, why did'nt you tell me you had the shaper....
                        Its what they were invented for.
                        Zero tool costs, and do them in a gang like mine above, as many as you can clamp down in the stroke length and be having it.
                        Then saw to length/width.

                        Click image for larger version

Name:	june - nov 2014 144.JPG
Views:	192
Size:	1.61 MB
ID:	1883914

                        Click image for larger version

Name:	june - nov 2014 156.JPG
Views:	187
Size:	1.62 MB
ID:	1883915

                        Comment


                        • #13
                          Originally posted by thaiguzzi View Post

                          Blimey!
                          Reminds me of that scene in Pulp Fiction.
                          Hey MF, why did'nt you tell me you had the shaper....
                          Its what they were invented for.
                          Zero tool costs, and do them in a gang like mine above, as many as you can clamp down in the stroke length and be having it.
                          Then saw to length/width.

                          Click image for larger version

Name:	june - nov 2014 144.JPG
Views:	192
Size:	1.61 MB
ID:	1883914

                          Click image for larger version

Name:	june - nov 2014 156.JPG
Views:	187
Size:	1.62 MB
ID:	1883915
                          Who is "MF"?
                          What type of tool post do these go to?
                          I'll be needing to do the inside dovetails and will give the shaper a try on at least one. I haven't used it in years.
                          I've read that the dovetails one the holders are a very critical operation to keep accurate and I don't want to ruin a part that's nearly done.
                          In reality making one's own bxa holders is a colossal waste of time considering they cost less than 20.00 to buy. My only reason for doing these is that they will be usa made.

                          Comment


                          • #14
                            Originally posted by danlb View Post


                            Check https://www.shars.com/3-4-60-degree-hss-dovetail-cutter for a 3/4 inch cutter with 3/8 inch shaft. HSS for $13

                            AXA and BXA are close to the same size, but not quite.

                            Using the picture above...
                            AXA:
                            • H: 0.386"
                            • L1: 1.687"
                            • L2: 1.382"
                            BXA
                            • H: 0.417"
                            • L1: 1.762"
                            • L2: 1.421"
                            Dan
                            Thanks but they are out of stock. Shars is experiencing a lot out of stock items.

                            Comment


                            • #15
                              Originally posted by elf View Post

                              It's actually better than using a dovetail cutter because it creates a relief in the corner:
                              Click image for larger version

Name:	Dovetail.JPG
Views:	248
Size:	9.6 KB
ID:	1883773Click image for larger version

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Size:	9.6 KB
ID:	1883774
                              I don't think you need relief in the female part of the dovetail as it is built in to the male part.
                              OPEN EYES, OPEN EARS, OPEN MIND

                              THINK HARDER

                              BETTER TO HAVE TOOLS YOU DON'T NEED THAN TO NEED TOOLS YOU DON'T HAVE

                              MY NAME IS BRIAN AND I AM A TOOLOHOLIC

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