43 minutes ago, FreaknSweet said:
it doesn't seem to far off to have an option to setting the top/bottom to a different layer.
It is a bit more complicated than that.
First let's make clear that Cura will not be able to mix layer-heights within one layer. In other words: Cura can not print one part of a layer at a certain height and then another part of the same layer half a layer higher. This would lead to collisions with previously printer parts in the next layer. Theoretically this can be handled, but Cura does not handle that. The only way this can currently work is when part of the layer is printed at an exact multiple of the rest of the layer, like how it is down with the infill layer thickness setting.
Now imagine a sphere and a cylinder of equal height next to eachother. Almost all of the layers of the sphere will be considered to be either a bottom layer (bottom half) or a top layer (top half), but the cylinder only has a bottom layer at the bottom and a top layer at the top. If bottom and top layers would be printed at a different height than the regular layers, what layer height should be chosen?
There is only one layer that touches the buildplate, for all (parts of) models, but tops and bottoms can be at different heights for even a single model, let alone multiple models.
In other word: it's more complicated than it might seem.
Hmm, I had basically the same question with a different use case.
I stepped up a few prints with a 1.0 mm nozzle, which is great for printing walls at 0.8 layer height, but the top/bottom get a bit thick. It would be nice to be able to thing them out a bit by using smaller layers.
Cura currently has an option to have the initial layer a different height then the rest, so it doesn't seem to far off to have an option to setting the top/bottom to a different layer.
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