Unexpected ridge on printed parts

Discussion in 'Technologies and Hardware' started by fasaxc, Jan 2, 2012.

  1. fasaxc
    fasaxc New Member
    Hi,

    Some of the models I recently had printed came with an unexpected ridge on some of the flat faces. Here's an example:

    DSC_9781.JPG

    The ridge doesn't appear in my original SketchUp file (which I exported to stl via the stl plugin) and I can't see it in the 3D render of my pieces: http://www.shapeways.com/model/411990/carcassonne_accessory_ pieces.html?gid=ug

    Overall, I can live with the defect but it'd be good to know if there's something wrong with the 3D model I made or whether I should expect that sort of defect even if the model was OK.

    Thanks,

    -Shaun
     
    Last edited: Jan 2, 2012
  2. TomZ
    TomZ New Member
    This means that the flat face was printed at a slight angle to the build plate and it is a normal defect.
    This could be because the production people wrongly oriented the part but they usually shouldn't do that. It probably is because you drew the face a at a slight angle, try to check in your software that it is aligned with the axis system.
     
  3. fasaxc
    fasaxc New Member
    Ah, that sounds plausible. The opposite side isn't 100% flat by design so if they oriented using that then it'd end up printed at a slight angle.