Above is a comparison between some different sample layer heights. But theres a catch: it will take way longer to print, because it has to do more layers. This will result in a preheated nozzle printing acceptably until the filament carries away too much heat, then grossly underextruding when the flow rate rises (larger layers, print speed increasing after initial layer slowdown), and potentially partially recovering when the layers get smaller or (due to slicer settings) the print speed slows near the top of a tall part. The lesser you set the layer height, the higher the resolution. If you don't do this, pulling the old filament may leave a "core" passage that lets the new filament get to the nozzle, more or less, but the lining of old filament in the nozzle will both limit thermal transfer (plastics are generally poor conductors) and restrict flow even when the new filament is well melted. Promoted from comment: if you had switched from a higher temperature filament to lower temperature, you need to purge the hot end at the higher printing temperature to ensure the old filament is sufficiently fluid for the new to push out. Adjusted the print speed, wall line width and fan speeds.Re-downloaded the files and resliced with all new settings.Looking for more things to try and troubleshoot, so please send me your ideas! The infill and inner walls seem fine, but the walls are definitely not air-tight with what is left.
#3D PRINTER SLICER SETTINGS FOR TOP LAYERS FULL#
If I scale it down to 50 % it prints fine, but it will NOT print properly at full scale. Sometimes I get a clean first 15 layers then it goes to crap, and cleans up for the last 10% or so. I can print other shapes fine- see the color swap example that was printed with the same settings successfully before AND after this series of failed prints of the same design. When I print this specific shape at this size the outer wall does not print properly, there are large gaps and it does not bond to the rest of the model so it just flakes off as soon as you handle it. I designed this in Tinkercad and sliced it with Cura for the Ender 3 Pro. Print Cooling- Initial 3 layers 0 %, then 100 %, also tried 50 %.Print Speed tried between 40 and 100 mm/s.Printer: Ender 3 Pro - Direct drive, BLTouch, stock magnetic print bed surface
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