Skin or Outer Layer

Can you alter a layer from a skin to an outer layer when the G code is processed or is this done in another programme.The picture shows yellow where I would like it to be red(Outer layer).

Running on luban, designed on FreeCAD, checked with Meshmixer.
Any help would be great, not a deal breaker It’s just I’d like to see it as a finished surface as opposed to a skin.



The difference between skin and outer wall is one of orientation. Outer wall are surfaces perpendicular to the bulidplate. Skins are surfaces parallel to the buildplate. There is a difference in texture, because the outer walls are threads deposited over time vertically as the print head moves up, and the skin is deposited all at once at the same Z height. The outer wall will have bumpy texture in the Z axis. The skin should be mostly smooth, assuming you’re properly calibrated.

If you really want the whole thing to be outer wall, you could try rotating the part 90º around the X axis, so it lays on it’s side. The part would need supports then, possibly everywhere, not just touching buildplate. You might still end up with a bit of skin on the gear looking bit though. You could try rotating ~15º around the Y axis so that the gear “teeth” are no longer parallel to the build plate.

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Thanks for the reply, all makes sense now, as you say a difference in texture.
Essentially my finish is 99% perfect apart from a few slight nozzle marks which I’ll tune up.
As you say different orientation may cause more issues so I’m more than happy now you have explained.Much appreciated :+1:

There can be good reasons for various orientations. Parts have good compression along the Z axis, but very poor shear in the X/Y plane. Some of the alternate infills attempt to improve that, but there’s really not much that can be done about the X/Y shear.

So I’ve printed some parts in less than ideal orientations because I needed the compression strength in that particular direction, and just cleaned up the support material as best I could. Depending on what you’re using this for, shear along the layer lines could be a problem. Like if that was meant to be a hinge pin in something larger.

Yes, I get your point.I’ve been making various models with the compression strength applicable to use.
The print I have done is to simplfy the movement of my router fence.I add a 8mm threaded bar through the Knob and 2 part epoxy in place.Previously I made a 6.5mm hole and tapped 8mm but the epoxy just made it easier with added strength. :+1: