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Re: [taigtools] Re: Metal cutting with the scroll saw ... Never thought of that!

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  • Tony Jeffree
    ... If the cutting speed is fast enough, each tooth is only in contact for a very short period of time and has the rest of the round trip to cool down again.
    Message 1 of 4 , Dec 1, 2005
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      At 05:19 01/12/2005, you wrote:
      > >During WW2 a fast bandsawing method using wood cutting bandsaws was used on
      > >metal parts. The basics of it were that full size, full power wood-cutting
      > >bandsaws were used at full speed to friction heat the contact point to red
      > >hot steel, which the teeth of the blade, each only in intermittant contact
      > >and thus cool themselves, would rip, in little gobs, out of the work piece.
      > >The part would seem to just fall through the blade, by the descriptions. It
      > >had a nasty reputation as a finger amputator, because the resistance to
      > >cutting was none, and people had their hands in the blade before they even
      > >knew the cut was happening. Anti-intuitive in the worst way. You don't see
      > >this anymore, although every few years somebody publishes about their
      > >experiences with it. Very dangerous to learn.
      >
      >Yikes! That sounds just plain nasty! But hey - if you did cut off a
      >few fingers, at least it would cauterize the stumps! <grin>
      >Must have been some interesting looking blades... I don't see how
      >they kept the blade itself from overheating.

      If the cutting speed is fast enough, each tooth is only in contact for a
      very short period of time and has the rest of the "round trip" to cool down
      again.


      Regards,
      Tony
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