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  1. #1
    Join Date
    Aug 2008
    Posts
    132

    Noob facing question

    Hello....noob facing question here...bare with me....

    Running Fadal 4020HT....10k rpm, 20hp. Bt40 holders.

    I have a 12 x 12 x 2" thk A-36 plate that I need to square and face.
    The plate is flame cut and has rough edges all around...

    I am wondering what cutters to use in squaring and facing. I have pockets to do and have an SGS Z-Carb AP cutter 3/4" for roughing and finishing the pockets....

    I am not sure what to use for facing - indexable cutter? What brand would be ok for someone who isn't doing full production constantly?

    Also - do I have to worry about "hardening" due to flame cutting process or should that not really concern me? Would I use an indexable cutter to face all the flame cut faces?

    Thanks and any advice would be greatly appreciated!!!

  2. #2
    Join Date
    Jan 2007
    Posts
    1389
    4" face mill with indexable inserts,( I like sandvik but any quality ones will work) for the sides a 3/4" solid carbide 4 flute 2.5" in length,
    but first on the sides clean them up with junk endmills and just offset the cuts to the side a tad as you go deep so you dont rub the non cutting part of the endmill. then take your 3/4 dia endmill and run a finsh pass, this way you dont screw it up on the interrupted flame cuts

    then suface grind the top or lap it

  3. #3
    Join Date
    Mar 2006
    Posts
    2712
    The heat affected zone from flame cutting can be NASTY, especially with higher carbon steels. Delw has a good suggestion in the junk end mill removing junk metal.

    Dick Z
    DZASTR

  4. #4
    Join Date
    Jan 2007
    Posts
    1389
    I keep all my broken/ worn out endmills just for that purpose. jagged edges/inturupted cuts and flame cut stuff.

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