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xisle

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Posts posted by xisle

  1. The plug-in takes some time to process. I tried it on last week's contest model with starting and ending Z values of 1 and 10 respectively and it added just shy of 30 seconds (with MY current Cura settings). I never saw the "RetractWC..." text in Cura though.

  2. Which version of Cura are you using?

    You can increase the "Bottom/Top Thickness" to a multiple of "Layer Height" that works out to more printed layers when closing the top.

    For example, to get 6 layers on top with a layer height of 0.2, use bottom/top thickness of 1.2. If your layer height was 0.12 with the same bottom/top thickness of 1.2, you'd get 10 layers closing the top surface.

  3. /off topic, is this first layer so messy because of the glue, because of leveling that could be off, or should I decrease the 0.3 first layer that was pretty much necessary for UMO without heated bed.

     

    I get that when the nozzle is a bit too close for a given first layer height.

    I regularly use 0.12 for first layer height on my UMO with no HBK. Makes for a smoother bottom when using Kapton tape and a thin layer of glue.

  4. I'm still not sure why the underside of the bridge looks like infill rather than surface.

     

    The first layer or two of the bottom of a bridge won't have a smooth connection between each x/y pass since they droop and won't stick together. I often cut a few of the strings off to clean up the bottom if the span is great enough to warrant it.

  5. The settings you used should work. Is there a gap in the layer view? Does it actually print the gap? Maybe there's another reason it's sticking.

    I model critical sections with 0.1mm or 0.2mm z-axis resolution from the base depending on the layer height I plan to print at. If you use 0.2mm resolution that allows for 0.1 or 0.2mm layers with proper alignment. So, I personally would not leave a 0.25mm gap, but rather 0.2mm.

    Imagine a feature in your model starting at 1.0mm. If you use a first layer height of 0.3 and a layer height of 0.2 that feature will not begin where you modeled it. I keep this in mind while modeling and changing settings in Cura.

  6. I check the Z height of the sphere in Cura and "Cut-off Bottom" in Advanced settings to sink half the sphere into the bed, then rotate 180 degrees to print the other half (unless the sphere is identical on both hemispheres). Sometimes I cut off an extra 0.1mm or so to account for the glue.

    I also strategically cut off the bottom of parts that don't have a planar bottom surface or that were modeled with a slight rotation. Off the top of my head, Raptor and Baryonyx claws were the last objects I split and glued. I much prefer that method to supports or raft.

  7. I also make a lot of one-off parts that can't be bought, mostly mechanical - spacers, hangers, brackets, clips. I don't open a toolbox or dig through scraps looking for solutions any more, but rather 3D model and print what I want (and occasionally need).

    I do the same for friends and customers whose eyes light up when they see a 3D printer in action - they are the ones who "get it" :)

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