In the first test, square samples with 10 layers and 250 μm fiber spacing were printed above CTS (260 mm . min -1 ). The print took 1 h to complete, and no jet instability was observed, resulting in a defectfree samples. Figure illustrates the stacked fibers forming well-defined square pore samples. However, due to the larger fiber diameter , there was some fiber bridging which slightly affected the homogeneity of the sample pores . To further test the processability of nylon-12, complex non-straight flat laydown patterns were tested. Initially, a 10-layer sinusoidal structure formed by bead-like fibers was produced. The printhead temperature was set to 250°C, the collector temperature was set to 70°C, and the collector speed was 100 mm . min -1 . As shown in Figure , a 10-layer, defect-free sample with a side length of 20 mm was obtained (Figure ). Due to the selected processing conditions and the increase in the distance between nodes (Figure ), a layer shifting effect was observed when increasing the layer height . This suggests the possibility of processing MEW samples beyond smooth fibers.