[NSRCA-discussion] Cutting CF and FG Panels???

[Lance Van Nostrand]

I've cut a lot of CF with my dremel.  The specialty hardware store here (Elliots) has 2" and 3" abrasive disks with compositions for cutting metal, fiberglass, etc.  These larger disks have a very high speed at the cutting surface and they keep your hands above the part to make a nice perpendicular line.   I get the composition for metal.  Even longer cuts are not much of a problem.  Same goes for the laminates.  Cut through the carbon, then cut on a bandsaw.
--Lance

  ----- Original Message ----- 
  From: Keith Black 
  To: General pattern discussion 
  Sent: Wednesday, May 07, 2008 3:13 PM
  Subject: Re: [NSRCA-discussion] Cutting CF and FG Panels???


  This doesn't sound like something one would find at the local hardware store. Where can these blades be found?

  BTW, what if you have aircraft ply laminated with carbon fiber? I would think in this case one would need a blade with teeth.

  Keith Black
    ----- Original Message ----- 
    From: Gray E Fowler 
    To: General pattern discussion 
    Sent: Wednesday, May 07, 2008 8:31 AM
    Subject: Re: [NSRCA-discussion] Cutting CF and FG Panels???



    Larry 

    The proper bandsaw blade for composites does not have any teeth on it at all.  The blade consists of a coating of tungsten carbide bits like rough sandpaper grit adhered to the leading edge of the band. The blade cuts by abrasion and will break before it wears out. Any blade with teeth is bad for composites as it will dull and the teeth can grab and delaminate the sustrate or your bond to the honeycomb.




    Gray Fowler
    Senior Principal Chemical Engineer
    Radomes and Specialty Apertures
    Technical Staff Composites Engineering
    Raytheon 


          "Lisa & Larry" <lld613 at psci.net> 
          Sent by: nsrca-discussion-bounces at lists.nsrca.org 
          05/06/2008 08:59 PM Please respond to
                General pattern discussion <nsrca-discussion at lists.nsrca.org> 


         To "NSRCA" <nsrca-discussion at lists.nsrca.org>  
                cc  
                Subject [NSRCA-discussion] Cutting CF and FG Panels??? 

                

         



    What is the best blade to use on a band saw? It has 2 speeds, what is the best speed (1,450 / 3,000 rpm)?

    I need to cut down two 12 x 24 panels and would like a clean edge ( 1/8” CF/Nomex/CF panel, and a FG/Nomex/FG panel) .

    Nope, don't use the band saw much….

    Thanks, 
      
    Larry Diamond_______________________________________________
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