![]() If you have some extreme overhangs, lots of supports, or supports that might not be sufficient, increasing this can save the top of your print from looking very sloppy. Similar to wall thickness, only on the top/bottom (Z axis) instead of sides. However in comparing sliced results with this at 0 or 1 I usually don’t see much difference. It could be useful if you want to improve the finish on the top surfaces of your prints–especially on flat prints. I usually leave this setting at 0 and just add more Top Layers if I think it is needed. Wall Line Count / total Wall Thickness has a huge impact on print time. For a toy or decorative statue, 1.2mm total wall thickness is a good balance when used along with 10-20% or more infill setting. Structural or weight-bearing prints will want more like 5 walls (2.0mm total thickness) and 30-100% infill, but that uses a lot more time and filament. ![]() A thin decorative vase could use a thin total wall thickness like 0.8mm (2 walls), but may break easily when dropped or squeezed. Generally you will want your prints to have at least 1.2 mm total Wall Thickness in order to be sturdy when handled.
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