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IndustryArena Forum > CAM Software > Mastercam > Poor surface finish

Thread: Poor surface finish

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  1. 02-01-2010, 08:22 PM #1
    pmsmichelle
    pmsmichelle is offline Registered
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    Mar 2008
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    25

    Poor surface finish

    I was able to create and cut a contour of it but the finish wasn't what I anticipated? I used a ball end cutter but ended up with ridges between cuts. What am I not doing correct? Am using 9.1
    Thanks in advance.
    Mike
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  2. 02-01-2010, 09:01 PM #2
    78nova
    78nova is offline Registered
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    Talking poor finish from ball mill

    Sounds like from what you described that your step-over amount is too large creating the ridges you referred to. Depending on the size of the tool, you can only step over a small amount so your cuts overlap a little to prevent excess material being left behind.
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  3. 02-05-2010, 03:54 PM #3
    ObrienDave
    ObrienDave is offline Registered
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    Jun 2005
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    I agree, your stepover value is too large for the radius of the cutter.
    For roughing, I used 1/4 to 1/8 the diameter.
    For finishing, 1/10 to 1/20 the diameter.
    Even smaller on a few pieces for some medical parts I made a few years ago.
    ObrienDave. MasterCam since V6. Gcode since 1983.
    The nose you punch today may belong to the butt you have to kiss tomorrow.
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