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Stack cutting and blade size.

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  • Stack cutting and blade size.

    I've noticed people on here say they stack cut four pieces of 1/8" BB and cut it with a 2/0 spiral. I can't seem to get that to work. I have to cut that with a #1 spiral and the blades last about 30-45 minutes. Whats up with that? Why can they but not me? I'd prefer to use a 2/0 due to the size especially when cutting close lines. I have a 788, cut on 5 1/2 speed and blades are FD-NS. My feed rate varies on blade newness/sharpness. Is my speed to high? If I used a 2/0 my cutting time would slow way down and blades wouldn't last long at all it seems and I'd end up using twice the amount of blades I use now.
    Just wondering how can ya'll and not me can cut with a 2/0 spiral on 1/2" BB.
    Confuscious says, "The cautious seldom err".
    Confuscious didn't own a scrollsaw either.

  • #2
    Your blade life sounds about right. I cut 1/2 material all the time with the 2/0 spiral. I stack cut 1/16 ply for my ornaments. If they have a lot of large veining I use the 2/0. Most of the time I use a straight 2/0 or 2.
    Your feed rate has to be adjusted accordingly. I have a RBI Hawk and very rarely vary my cutting speed when changing blades but tension is critical.
    Rolf
    RBI G4 26 Hawk, EX 16 with Pegas clamps, Nova 1624 DVR XP
    Philosophy "I don't know that I can't, therefore I can"
    Proud Member of the Long Island Woodworkers Club
    And the Long Island Scrollsaw Association

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    • #3
      I don't know if spiral blades last for any longer or shorter time than reverse tooth blades but cutting 1/2 inch oak I change a No: 3 blade about every thirty minutes ... I would imagine cutting 1/2 total of ply would be harder on the blade due to the glue in the ply? Someone correct me if this is wrong ...
      Ian

      Scrolling with a Dewalt 788

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      • #4
        I use a 2/0 spiral on 5/8th inch thick solid red oak, and can easily get 1/2 hour cutting time from the blade. same blade too. Dale
        Dale w/ yella saws

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        • #5
          Seems like it would take forever to cut that oak with a 2/0. I can't seem to make any satisfactory progress with a 2/0 on the 1/2"BB. It'll cut but takes forever and a day to get any significant progress made in production. I might try it tomorrow on a slower speed and time it and compare to the #1. The #1 cuts good and is sturdy enough to "shave" the edges in spots where you can't with safety but a 2/0 would be better for tight spots. Then again I could use my head a little for a change and use them both as tools for the job. Like a flat and phillips screwdriver, proper tool for the job. Tight spot, use a 2/0. Long cuts with shaving needs, use the #1.
          Confuscious says, "The cautious seldom err".
          Confuscious didn't own a scrollsaw either.

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          • #6
            Capt. ...for spirals I found that using a 2/0 is better in anything. It makes a smaller kerf, so less force is needed to cut with it as compared to #1 .No matter which size you use, you still have to remove as much wood as the diameter of the blade to make a cut, so removing less is more . I think my saws on 6 or so when I am spiralizing. Dale
            Dale w/ yella saws

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            • #7
              Tried a 2/0 on latest work and to my surprise it did well. I think I had a bad time once and that was why I wrote them off as inadaquete. They did fine and I think they almost lasted as long if not longer than the #1. Although I couldn't "shave" down to a line or smooth out a spot with them as good as I can with a #1 but that's due to the size and rigidity of the thicker blade. I seemed to have a little more control with the #1 but that might just because I'm used to the feel of the #1 instead of the light 2/0. Good to know that if I get in a pinch I can use the 2/0 or use them for the neurosurgery pieces.
              Confuscious says, "The cautious seldom err".
              Confuscious didn't own a scrollsaw either.

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              • #8
                When I was starting out scroll-sawing I had read that a blade can last from 5 second to 5 minutes of being sharp. I have had a lot of 5 second blades so don't feel lonely it happens to me too.

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                • #9
                  hi there could you show some of your work with spiral blades?

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                  • #10
                    Remember when cutting any wood what has glue, like BB, blades will not last as long as in other woods. Glue heats the blades.
                    Mike
                    SD Mike

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