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  1. #1
    Join Date
    Mar 2006
    Location
    Clayton, Melbourne
    Posts
    99

    Default Problem with router leaving rippled edges

    I just bought a new flush trim router bit in order to flush trim the edges of laminated sheets of 18mm marine ply.

    The first 2 - 3 cuts were fine, however, now it will not cut cleanly or smoothly at all. The edges of the cut are very rippled.

    The router bit appears fine visually.

    I am using the router freehand with a straight edge.

    What could be the problem?

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  3. #2
    Join Date
    Nov 2006
    Location
    Bendigo Victoria
    Age
    80
    Posts
    16,560

    Default

    Could be dirt on the bearing?

  4. #3
    Join Date
    Mar 2006
    Location
    Clayton, Melbourne
    Posts
    99

    Default

    Quote Originally Posted by Big Shed View Post
    Could be dirt on the bearing?
    Thanks, checked that but it's not the case.

  5. #4
    Join Date
    Mar 2008
    Location
    Newcastle
    Posts
    326

    Default

    If there are any bumps or hollows on the edge of the ply the uneveness (is that how it's spelt) will be transferred onto the routed edge.

    Try sanding the edge first.

  6. #5
    Join Date
    Jul 2006
    Location
    Crowborough, East Sussex, UK
    Posts
    820

    Default

    Quote Originally Posted by wixy
    I am using the router freehand with a straight edge.
    Flush trim bits are bearing-guided and I can't see the need / visualise how a straightedge is involved. The bearing is meant to run along the substrate, trimming the laminate flush with the edge that the bearing runs along. If that's what you're doing, then either the substrate is wavy, or the cutter isn't being held tight enough against the substrate edge.

    You are cutting in the correct direction, aren't you (left to right when viewed from the front)?

    Ray

  7. #6
    Join Date
    Oct 2008
    Location
    Melbourne
    Posts
    76

    Default

    How much material are you trying to remove. If you attempt to remove too much the bit may grab. Try using less blade and more sweeps.

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