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  • Another interesting circle jig

    I don't know about anyone else, but I have the usual Jasper jigs for making round holes for drivers, plus a Router Buddy that unfortunately didn't mount to my Bosch plunge router base. I'm always keeping my eye out for other circle guides just in case.

    I saw this one made by a fellow in California that looks very well-made (the base is nearly 1/2" thick acrylic!). It's a little expensive but that's usually the flip-side of quality....

    http://www.patwarner.com/router_circle_maker.html



    Has anyone here used this guide before and have any thoughts on it?
    Bill Schneider
    -+-+-+-+-
    www.afterness.com/audio

  • #2
    Re: Another interesting circle jig

    That looks really similar to one I made. I had to make mine specifically for large diameter holes (18" subwoofer). I made it years ago when I had access to a milling machine at work. I like the circle jigs with infinite adjustment, because I can measure from pin to cutter with calipers and get a really accurate radius.

    The one you listed allows infinite adjustment, and that is a great thing in my opinion. It looks really well made, and if it helps in your hobbies, then it's definitely worth the money. As my father-in-law (who is a blacksmith) says "good tools don't cost...they pay".
    Statements: "They usually kill the desire to build anything else."

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    • #3
      Re: Another interesting circle jig

      Half inch thick isn't necessarily a good thing, it reduces your depth of cut. But it does look interesting.
      It is estimated that one percent of the general population are psychopaths - New Criminologist: Understanding Psychopaths

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      • #4
        Re: Another interesting circle jig

        The Craftsman is cheaper. I've cut hundreds of holes with mine.http://www.sears.com/craftsman-multi...p-00925179000P

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        • #5
          Re: Another interesting circle jig

          I had that Craftsman jig once, but gave it away when it didn't fit my router model. I agree that it's low cost.
          Bill Schneider
          -+-+-+-+-
          www.afterness.com/audio

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          • #6
            Re: Another interesting circle jig

            That looks interesting, but at least to me, it's just a different take on the same idea.

            What's really lacking in every circle cutting jig I've seen is the ability to hold the router steady with both hands and just make a circular motion with it. With all of these jigs you have to rotate the router which means switching hands, and a twirling cord, etc.

            I admit, if I'm understanding the info correctly, that setup for this one seems pretty easy compared to the jasper, which I have and my own homemade jig which is just like the Jasper jig (big one). Still, it's harder than I think it could be.

            Someday, someone will make a better circle cutting setup that is easy and comfortable to use. I'm working on a few ideas for my own, but it's harder than it looks! I have a history of griping about this.

            TomZ
            Zarbo Audio Projects Youtube Channel: https://www.youtube.com/channel/UCEZ...aFQSTl6NdOwgxQ * 320-641 Amp Review Youtube: https://youtu.be/ugjfcI5p6m0 *Veneering curves, seams, using heat-lock iron on method *Trimming veneer & tips *Curved Sides glue-up video
            *Part 2 *Gluing multiple curved laminations of HDF

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            • #7
              Re: Another interesting circle jig

              Originally posted by tomzarbo View Post

              What's really lacking in every circle cutting jig I've seen is the ability to hold the router steady with both hands and just make a circular motion with it. With all of these jigs you have to rotate the router which means switching hands, and a twirling cord, etc.
              I'm in complete agreement with the desire to have the router itself rotate so that cords don't twist, etc. That would be the ultimate.
              Bill Schneider
              -+-+-+-+-
              www.afterness.com/audio

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              • #8
                Re: Another interesting circle jig

                I made this from some scrap a long time ago.
                Crude, but effective.
                Since the jig pivots on a bushing the rotation problem is mitigated.
                http://tcgweb.com/router_jig.htm

                The plastic was machined on the router table and drill press.

                Originally posted by tomzarbo View Post
                That looks interesting, but at least to me, it's just a different take on the same idea.

                What's really lacking in every circle cutting jig I've seen is the ability to hold the router steady with both hands and just make a circular motion with it. With all of these jigs you have to rotate the router which means switching hands, and a twirling cord, etc.

                I admit, if I'm understanding the info correctly, that setup for this one seems pretty easy compared to the jasper, which I have and my own homemade jig which is just like the Jasper jig (big one). Still, it's harder than I think it could be.

                Someday, someone will make a better circle cutting setup that is easy and comfortable to use. I'm working on a few ideas for my own, but it's harder than it looks! I have a history of griping about this.

                TomZ
                ~99%
                Make me an angel that flies from Montgomery
                Make me a poster of an old rodeo
                Just give me one thing that I can hold on to
                To believe in this livin' is just a hard way to go

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                • #9
                  Re: Another interesting circle jig

                  It's time to go into production with that Bob! That's an elegant solution to a vexing problem.
                  Bill Schneider
                  -+-+-+-+-
                  www.afterness.com/audio

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                  • #10
                    Re: Another interesting circle jig

                    The clear base is very nice, but I am not sure what you want to see when routing a circle as I don't ever draw the circle that I am going to cut. When cutting a circle I am focused on making sure the pivot stays in the hole and the router stays on the baffle as I spin it around. But if I was going to make one, I'd certainly use polycarbonate. I use the craftsman unit and even though it is a bit flimsy, once you are confident in how you set it up, it cuts very precise circles and I can even cut the small diameter hole for the ND20 rear-mount with it. I haven't used my Jasper jigs for years.
                    Brad
                    piano black sealing mdf irregular recesses grill technique

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                    • #11
                      Re: Another interesting circle jig

                      They need a two piece base that allows the router to rotate as you make your circle. That way you can have the front of the router facing you and you also don't have to navigate the vacuum hose.
                      If we all reacted the same way, we'd be predictable, and there's always more than one way to view a situation.
                      What's true for the group is also true for the individual. It's simple: Overspecialize, and you breed in weakness.
                      It's slow death.

                      //Burn n' Die//Dream Weaver//Maximus//ABC Bookshelf Speakers//Dayton Twin Towers

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                      • #12
                        Re: Another interesting circle jig

                        Thats what Bob's does in post #8.
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                        • #13
                          Re: Another interesting circle jig

                          Could you just hang the cord from above?
                          Kenny

                          http://www.diy-ny.com/
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                          • #14
                            Re: Another interesting circle jig

                            Yes, works pretty well. Also works for the vac hose.


                            Originally posted by kenny_k View Post
                            Could you just hang the cord from above?
                            I was so much older then, I'm younger than that now.
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                            • #15
                              Re: Another interesting circle jig

                              Originally posted by bobbarkto View Post
                              I made this from some scrap a long time ago.
                              Crude, but effective.
                              Since the jig pivots on a bushing the rotation problem is mitigated.
                              http://tcgweb.com/router_jig.htm

                              The plastic was machined on the router table and drill press.
                              Nice! So your router pivots in the bushing as you make your cut so both hands stay on your router at all times. No cord twisting, no vac hose binding... what a good idea. I've developed several ideas to fix the issue, but you actually did it! Cutting circles is by far my least fun thing to do speaker-building wise.

                              TomZ
                              Zarbo Audio Projects Youtube Channel: https://www.youtube.com/channel/UCEZ...aFQSTl6NdOwgxQ * 320-641 Amp Review Youtube: https://youtu.be/ugjfcI5p6m0 *Veneering curves, seams, using heat-lock iron on method *Trimming veneer & tips *Curved Sides glue-up video
                              *Part 2 *Gluing multiple curved laminations of HDF

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