Building a Fly Cutter - Part 1


Comments • 461

  • Craig Sudman
    Craig Sudman  4 weeks back

    Oh oh Bozo no no!  As far as surface finish goes, if someone says, "Hey I can see myself!"  I know that it's too fine a finish.  Thumbs up.

    • Jacked up
      Jacked up  1 months back

      That's the biggest Allen wrench I've ever seen

      • AllAroundMan
        AllAroundMan  1 months back

        A fly cutter? For what, cutting flies?

        • Robert Paulson
          Robert Paulson  1 months back

          What makes them so fly anyways?

          • John Hili
            John Hili  1 months back

            Fly cutters are a sure way of ruining the splines drive spindle of your milling as it hammer away especially with heavy cuts I have been through it myself and I threw the fly cutter away don't use it especially if you have a Chinese milling!!!!!!

            • Graham Nicholls
              Graham Nicholls  2 months back

              Can you not just turn the wheel faster when facing off to get a better finish?

              • Kaleb Masters
                Kaleb Masters  2 months back

                You seem to love my highschool projects

                • Ben Hall
                  Ben Hall  2 months back

                  I guess your mrs dont talk that much when you are around. fucking hell you bore me.

                  • DukeOfEarle88
                    DukeOfEarle88  3 months back

                    Feeds and Speeds had the best singles of the 1610s.

                    • maybe arka maybe not
                      maybe arka maybe not  3 months back

                      I am waiting for the day he makes an entire leathe and milling machine with his leathe and milling machine.

                      • Falcon
                        Falcon  4 months back

                        Why your surface finish is weird you ask
                        Well first of all your explanation was great and correct
                        But you should also consider using coolant
                        Helps a lot

                        • Paul Murphy
                          Paul Murphy  4 months back


                          • Kev B
                            Kev B  4 months back

                            Uh, boring! I was expecting a really cool gizmo to kill flies :(.

                            • iamacly
                              iamacly  4 months back

                              Hey TOT, love the videos but, whatever happened to the Surface Gauge build?

                              • Ed Miera
                                Ed Miera  5 months back

                                I have one question.. have you ever had a fly cutter fall out?
                                Think about it have you ever heard of a tool company making a milling cutter that is fit on a tapered arbor? thats because it will vibrate lose...Ed from Colorado

                                • This Old Tony
                                  This Old Tony   5 months back

                                  never had one fall out but why do I feel jinxed now

                              • Kaysler
                                Kaysler  5 months back

                                TOT i have never machined anything in my life. Heck I've never even welded or used a lathe, yet here i am caring about surface finish and admiring your chips. what have you done to me?

                                • Butterfag MJ
                                  Butterfag MJ  5 months back

                                  filing to 10 min lil

                                  • Inspector Steve
                                    Inspector Steve  5 months back

                                    Where do you get your metal from?

                                    • Stephen Boyd
                                      Stephen Boyd  5 months back

                                      The suspense is killing me man. Did the entire shop burn down. Is everyone still alive. I do hope so.

                                      • Green Achers
                                        Green Achers  6 months back

                                        Love the calibrated tilt gauge, carefully adjusting the completely arbitrary 10 degrees.

                                        • Chloe Hennessey
                                          Chloe Hennessey  6 months back

                                          That’s not a hex! That’s a part of Chuck Norris’s DeWalt speed bit set for his impact drill.

                                          • Kevin Sinclair
                                            Kevin Sinclair  6 months back

                                            hi tony i love your videos could you give us a tour of your shop n what tools and machines you have thanks

                                            • Ghost Erik
                                              Ghost Erik  6 months back

                                              Has 1 hour to work the part.
                                              Talks 10 minutes about why he is not doing an all the way through mirror finish.

                                              • Jared Williams
                                                Jared Williams  7 months back

                                                2.5 years later and I'm still waiting for this surface gauge build lol

                                                • Jared Covey
                                                  Jared Covey  7 months back

                                                  Jared Williams I literally just looked through all of ToT’s videos for a surface gauge build video, only to be disappointed...

                                              • George H. Reed Jr.
                                                George H. Reed Jr.  7 months back

                                                Come on Tony get with the fly cutter!

                                                • Rudy Acosta
                                                  Rudy Acosta  8 months back

                                                  What happened to the surface Gage build??

                                                  • LowJack187
                                                    LowJack187  9 months back


                                                    • Der Mate
                                                      Der Mate  9 months back

                                                      I aktually worked just once on a lathe which increase rpm if u move into the center and its nice but i rlly love those big gearboxed at the older lathes

                                                      • Nodus Technologies
                                                        Nodus Technologies  9 months back

                                                        first you make me google what a fly cutter is, then i find out it's not chopping insects to bits at all, and i still watch the vijeo. well done.

                                                        • SuburbanTool Inc
                                                          SuburbanTool Inc  9 months back


                                                          • karl wood
                                                            karl wood  10 months back

                                                            most of us dont need an hour to knock one out, maybe see a doctor

                                                            • Zachary Nixon
                                                              Zachary Nixon  11 months back

                                                              What ever happened to that surface gauge build

                                                              • jlucasound
                                                                jlucasound  11 months back

                                                                Where is Part 2? Never mind. Found it.

                                                                • Jim Fortune
                                                                  Jim Fortune  11 months back

                                                                  All that to cut flies? For a buck you could buy a swatter at the dollar store.

                                                                  • 70superchicken
                                                                    70superchicken  11 months back

                                                                    Wtf happened to that surface gauge video

                                                                    • ot0m0t0
                                                                      ot0m0t0  11 months back

                                                                      Sugar how you get so Fly.

                                                                      • Alejandro Martinez
                                                                        Alejandro Martinez  11 months back

                                                                        Another one to add to the greats.
                                                                        Really enjoyed this video. Learned a lot. Keep it up!

                                                                        • TUDOR MARCU
                                                                          TUDOR MARCU  11 months back

                                                                          You have no idea how much that surface finish was bothering me. Thanks for explaining all that!

                                                                          • Allan Korte
                                                                            Allan Korte  11 months back

                                                                            Tony, you've inspired me to jump in, and I've bought a lathe and a mill recently. I repaired a hydraulic cylinder and ended up with a rod about 4" in diameter and 20' long. (it was slightly bent). I was excited to have this material for practice and fabrication. Can you tell me what it is about chromed cylinder rod that you're not a fan of? The more I know about what it is good for, or rather, what it isn't good for, the better off I'll be. Thanks for all your awesome content.

                                                                            • Brian Breazeale
                                                                              Brian Breazeale  12 months back

                                                                              That must have been a big allen wrench...

                                                                              • Daryush Dehnavi
                                                                                Daryush Dehnavi  12 months back

                                                                                ahh yes, related rates of change... i remember my calculus days

                                                                                • TheBucketofDeath
                                                                                  TheBucketofDeath  12 months back

                                                                                  Turn this up to 1.25 playback speed. Your welcome.

                                                                                  • Tareq Aldallal
                                                                                    Tareq Aldallal  12 months back

                                                                                    still gearing up for the surface gauge build? it's 2019 man

                                                                                    • S W
                                                                                      S W  2 months back

                                                                                      I spent the last ten minutes looking for that video after hearing him mention it

                                                                                  • Kiriakos Nik
                                                                                    Kiriakos Nik  12 months back

                                                                                    I'm in the process of making a fly cutter based on your video tony, when in the exact same stage of making the 10 degree angle, the switch of my mill melted too. Guess I'm following the tutorial to the spot.
                                                                                    Except maybe that I'm using a round stock steel, didn't have a hex :)

                                                                                    • SeIKo BLaCk DiVeRs
                                                                                      SeIKo BLaCk DiVeRs  12 months back

                                                                                      I am a hobbyist living in rural area North of Thailand. Having no background in machine learning, only learn this from YouTube and Google. Learning a lot by watching your videos on many topics

                                                                                      • Sumpeno Notoboto
                                                                                        Sumpeno Notoboto  1 years back

                                                                                        Hey Tony, considering that the linear speed of each minute diameter of the work face is supposed to be linear with the rotational speed when the cutter is "fed in", then the ideal rotational speed should be inversely corelated to the linear speed. That means if the linear speed is 0 because it has 0 in diameter then the rotational speed should be infinity rpm. That also means no matter how hard we try we can never reach perfect face finish because until now I never heard any lathe that has infinity rpm! My God Tony, your wisdom is too much for my poor little brain to comprehend!

                                                                                        • Bill Gatliff
                                                                                          Bill Gatliff  1 years back

                                                                                          Question from a non-machinist: why is surface finish sensitive to cutting speed?

                                                                                          • Bill Gatliff
                                                                                            Bill Gatliff  1 years back

                                                                                            @This Old Tony do lower speeds always improve surface finish, at least until they're as good as they're going to get? If so, then maybe at the high end the losses are because the tool does more pushing than cutting and clearing?

                                                                                            Thanks for the reply!

                                                                                          • This Old Tony
                                                                                            This Old Tony   1 years back

                                                                                            think of it like painting... the paint brush has a certain speed range if you will to lay paint down. too fast and it'll look bad. to slow and you're wasting time. there's probably a better analogy out there. :)

                                                                                        • K W
                                                                                          K W  1 years back

                                                                                          Hey Tony
                                                                                          Thanks for the little digression about feeds and speeds. I recently experienced the reverse of this when parting off a piece. Cutting got easier and smoother the closer I got to the center of the work.
                                                                                          I know you have talked about it in your tooling videos some, but how about a video about just feeds and speeds and also one on a subject that I don't see addressed much or at all, lead angle??? How important is it and what should it be.