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[bolger] Re: cutting bulkhead openings?

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  • Richard Spelling
    Make a radius arm, circle cutting jig for your router. Use a thin strait cutting bit. ... -- Richard
    Message 1 of 9 , Aug 30, 1999
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      Make a radius arm, circle cutting jig for your router. Use a thin strait
      cutting
      bit.

      harding2@... wrote:
      >
      > Plans for the folding schooner call for round cut outs for the
      > bulkheads about9" in radius. Noticed the absolutely clean cut outs on
      > GHC's Light Schooner. I have an old Sears sabre saw and have been able
      > to do a relatively neat job on the bilge cut outs with a nice new
      > makita blade but I am daunted by these big holes. I figure I can lay
      > them out with a string but am worried about how to get a clean cut. Any
      > advice would be appreciated.
      >
      > Leander
      >
      > ------------------------------------------------------------------------
      >
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    • harding2@home.com
      Plans for the folding schooner call for round cut outs for the bulkheads about9 in radius. Noticed the absolutely clean cut outs on GHC s Light Schooner. I
      Message 2 of 9 , Aug 30, 1999
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        Plans for the folding schooner call for round cut outs for the
        bulkheads about9" in radius. Noticed the absolutely clean cut outs on
        GHC's Light Schooner. I have an old Sears sabre saw and have been able
        to do a relatively neat job on the bilge cut outs with a nice new
        makita blade but I am daunted by these big holes. I figure I can lay
        them out with a string but am worried about how to get a clean cut. Any
        advice would be appreciated.

        Leander
      • manta@localline.com
        mant-@localline.com wrote: Leander... cut you openings about 1/8 of an inch from you line then rasp and file up to you line... then put a drum sander in a
        Message 3 of 9 , Aug 30, 1999
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          mant-@... wrote: Leander... cut you openings about 1/8 of an
          inch from you line then rasp and file up to you line... then put a drum
          sander in a drill and finish smooth...(or hand sand with paper wrapped
          around a round piece of PVC or closet rod) it is a lot more work this
          way but ... you can finish to you line ( making sure that you line is
          just the way you want it first) ... chris
          original article:http://www.egroups.com/group/bolger/?start=187
          > Plans for the folding schooner call for round cut outs for the
          > bulkheads about9" in radius. Noticed the absolutely clean cut outs on
          > GHC's Light Schooner. I have an old Sears sabre saw and have been able
          > to do a relatively neat job on the bilge cut outs with a nice new
          > makita blade but I am daunted by these big holes. I figure I can lay
          > them out with a string but am worried about how to get a clean cut.
          Any
          > advice would be appreciated.
          >
          > Leander
          >
        • GHC
          A good, fine blade with some tooth set is a start. You can also score around your line first with a knife, cutting through masking tape is second choice.
          Message 4 of 9 , Aug 31, 1999
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            A good, fine blade with some tooth set is a start. You can also score
            around your line first with a knife, cutting through masking tape is second
            choice.

            Gregg

            At 03:56 PM 8/30/1999 -0700, you wrote:
            >Plans for the folding schooner call for round cut outs for the
            >bulkheads about9" in radius. Noticed the absolutely clean cut outs on
            >GHC's Light Schooner. I have an old Sears sabre saw and have been able
            >to do a relatively neat job on the bilge cut outs with a nice new
            >makita blade but I am daunted by these big holes. I figure I can lay
            >them out with a string but am worried about how to get a clean cut. Any
            >advice would be appreciated.
            >
            >Leander
            >
            >
            >------------------------------------------------------------------------
            >
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            >http://www.egroups.com - Simplifying group communications
            >
            >
            >
            >
            >
          • Chuck Leinweber
            I might as well jump into this: Coat the ply with epoxy before cutting, then cut with jug saw with fine blade about 1/16 away, sand to line. Chuck ... From:
            Message 5 of 9 , Aug 31, 1999
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              I might as well jump into this: Coat the ply with epoxy before cutting,
              then cut with jug saw with fine blade about 1/16" away, sand to line.

              Chuck


              ----- Original Message -----
              From: <harding2@...>
              To: <bolger@egroups.com>
              Sent: Monday, August 30, 1999 5:56 PM
              Subject: [bolger] cutting bulkhead openings?


              > Plans for the folding schooner call for round cut outs for the
              > bulkheads about9" in radius. Noticed the absolutely clean cut outs on
              > GHC's Light Schooner. I have an old Sears sabre saw and have been able
              > to do a relatively neat job on the bilge cut outs with a nice new
              > makita blade but I am daunted by these big holes. I figure I can lay
              > them out with a string but am worried about how to get a clean cut. Any
              > advice would be appreciated.
              >
              > Leander
              >
              >
              > ------------------------------------------------------------------------
              >
              > eGroups.com home: http://www.egroups.com/group/bolger
              > http://www.egroups.com - Simplifying group communications
              >
              >
              >
              >
              >
            • David Beede
              Ok, I ll jump in too. I vote for the router approach, but you can also use a smaller disk as your guide. Take the distance from the edge of your router base to
              Message 6 of 9 , Aug 31, 1999
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                Ok, I'll jump in too. I vote for the router approach, but you can also
                use a smaller disk as your guide. Take the distance from the edge of
                your router base to the router bit cutter, subtract that from the radius
                of the hole you want to cut. The remainder is the radius of the circle
                you want as your guide. You can make this out of wood (hole saw or
                whatever) or find a round lid, metal or plastic, that is close enough.
                Screw it to the center of the hole you want to cut, drill a starter hole
                for the router bit, then keep the router presed against your pattern
                while you cut the circle. (Whew, I got tired just describing it, maybe
                the swing arm would be easier.)
                djb

                Chuck Leinweber wrote:

                >
                > I might as well jump into this: Coat the ply with epoxy before cutting,
                then cut with jug saw with fine blade about 1/16" away, sand to line.

                Chuck

                ----- Original Message -----
                From: <harding2@...>
                To: <bolger@egroups.com>
                Sent: Monday, August 30, 1999 5:56 PM
                Subject: [bolger] cutting bulkhead openings?

                > Plans for the folding schooner call for round cut outs for the
                > bulkheads about9" in radius. Noticed the absolutely clean cut outs on
                > GHC's Light Schooner. I have an old Sears sabre saw and have been able
                > to do a relatively neat job on the bilge cut outs with a nice new
                > makita blade but I am daunted by these big holes. I figure I can lay
                > them out with a string but am worried about how to get a clean cut. Any
                > advice would be appreciated.
                >
                > Leander
                >
                >
                > ------------------------------------------------------------------------
                >
                > eGroups.com home: http://www.egroups.com/group/bolger
                > http://www.egroups.com - Simplifying group communications
                >
                >
                >
                >
                >

                > -----------------------------------------------------------------------
                > [Real Guide - MP3 of the day]

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              • pippobianco@tin.it
                pippobianc-@tin.it wrote: original article:http://www.egroups.com/group/bolger/?start=187 ... Any ... Hi Leander - I ve cut a 8 radius hole in a 10 mm
                Message 7 of 9 , Aug 31, 1999
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                  pippobianc-@... wrote:
                  original article:http://www.egroups.com/group/bolger/?start=187
                  > Plans for the folding schooner call for round cut outs for the
                  > bulkheads about9" in radius. Noticed the absolutely clean cut outs on
                  > GHC's Light Schooner. I have an old Sears sabre saw and have been able
                  > to do a relatively neat job on the bilge cut outs with a nice new
                  > makita blade but I am daunted by these big holes. I figure I can lay
                  > them out with a string but am worried about how to get a clean cut.
                  Any
                  > advice would be appreciated.

                  Hi Leander - I've cut a 8" radius "hole" in a 10 mm (3/8") thick ply
                  bulkhead using a string, a nail and a pencil to draw the circle, a
                  saber saw to do the cut and a Surform (the small one with the pulling
                  action) to fair the edges. Finally, quick pass with sand paper. Took 5
                  minutes total, very easy. Best, Pippo
                • GHC
                  Leander - I forgot, are you building a schooner? If so, instead of cutting the holes to plan, you ought to think about cutting them for sealing deck plates for
                  Message 8 of 9 , Aug 31, 1999
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                    Leander - I forgot, are you building a schooner? If so, instead of cutting
                    the holes to plan, you ought to think about cutting them for sealing deck
                    plates for the extra flotation. It might make the difference between
                    bailing on the water and dragging to the beach to bail (see my site).

                    Gregg

                    At 03:05 PM 8/31/1999 -0700, you wrote:
                    >Hi Leander - I've cut a 8" radius "hole" in a 10 mm (3/8") thick ply
                    >bulkhead using a string, a nail and a pencil to draw the circle, a
                    >saber saw to do the cut and a Surform (the small one with the pulling
                    >action) to fair the edges. Finally, quick pass with sand paper. Took 5
                    >minutes total, very easy. Best, Pippo
                  • The Fitz-Gerald's
                    You might want to try a special blade in your sabre saw. I got some at Sears a long time ago. I have one left, and it has the number 28761 on it. I don t
                    Message 9 of 9 , Aug 31, 1999
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                      You might want to try a special blade in your sabre saw. I got some at
                      Sears a long time ago. I have one left, and it has the number 28761 on it.
                      I don't know if they still sell them. It makes the cleanest cuts in plywood
                      you can imagine.

                      Regards, Kevin Fitz-Gerald

                      -----Original Message-----
                      From: Chuck Leinweber <duckworks@...>
                      To: bolger@egroups.com <bolger@egroups.com>
                      Date: Tuesday, August 31, 1999 1:15 PM
                      Subject: [bolger] Re: cutting bulkhead openings?


                      >I might as well jump into this: Coat the ply with epoxy before cutting,
                      >then cut with jug saw with fine blade about 1/16" away, sand to line.
                      >
                      >Chuck
                      >
                      >
                      >----- Original Message -----
                      >From: <harding2@...>
                      >To: <bolger@egroups.com>
                      >Sent: Monday, August 30, 1999 5:56 PM
                      >Subject: [bolger] cutting bulkhead openings?
                      >
                      >
                      >> Plans for the folding schooner call for round cut outs for the
                      >> bulkheads about9" in radius. Noticed the absolutely clean cut outs on
                      >> GHC's Light Schooner. I have an old Sears sabre saw and have been able
                      >> to do a relatively neat job on the bilge cut outs with a nice new
                      >> makita blade but I am daunted by these big holes. I figure I can lay
                      >> them out with a string but am worried about how to get a clean cut. Any
                      >> advice would be appreciated.
                      >>
                      >> Leander
                      >>
                      >>
                      >> ------------------------------------------------------------------------
                      >>
                      >> eGroups.com home: http://www.egroups.com/group/bolger
                      >> http://www.egroups.com - Simplifying group communications
                      >>
                      >>
                      >>
                      >>
                      >>
                      >
                      >
                      >------------------------------------------------------------------------
                      >
                      >eGroups.com home: http://www.egroups.com/group/bolger
                      >http://www.egroups.com - Simplifying group communications
                      >
                      >
                      >
                      >
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