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IndustryArena Forum > CAM Software > CamBam > wacky operation ordering
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  1. #1
    Join Date
    Apr 2007
    Posts
    7

    wacky operation ordering

    I've been using cambam for a while now and I generally like the features it provides. There are one or two things that are... a bit odd.

    The one I'm writing about now is the ordering that it picks for the operations.

    For this cb file
    http://mmccoo.com/electronics/gantryparts_Sheet_1.cb

    I have:
    1) a hole in the upper left corner (inner profile)
    2) a series of drill holes left to right (with start point on the left most)
    3) another hole upper right (inner profile)
    4) the outline of the part (outer profile)

    I have inserted "start points" to hint the ordering. The machining sequence is
    1) the upper left hole
    2) the drill holes... starting from the right. finishing on the left.
    3) the upper right hole... to start there it's got to travel all the way from left back to right.
    4) finally the outline.

    The resulting gcode is here:
    http://http://mmccoo.com/electronics...Sheet_1.top.nc

    Am I doing something wrong that it's not following the start point directive?

    It seems that I shouldn't even need to give the start points, but I understand how the generalized algorithm may be difficult to implement.

    Miles

  2. #2
    Join Date
    Feb 2005
    Posts
    521
    Hello Miles,

    I am treating the drill operation ignoring the start point as a bug. Start point works with all other machining operations but the drill op is using the first selected drawing object as the start point.
    I am sorry about that; I will make sure this is fixed in the next update.

    Thank you for bringing this to my attention.

    For now, a work around, is to reselect the circles for the drill operation so the right most circle is the first selected (by CTRL+click to select each object in order...or edit the Primitive IDs property and move the ID of the last circle (35) to the start of that list).

    Improving tool path optimisation is one of the aims of the next major release.
    www.cambam.co.uk

  3. #3
    Join Date
    Apr 2007
    Posts
    7
    Yup. your workaround does the trick.

    Thank you for removing some frustration from my world.

    Miles

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