DSC measurements of the printed part confirm their crystallinity, albeit less pronounced (13%) with a broader melting temperature range (Supplementary Figure ). This could be explained by the faster solidification due to more intense irradiation leading to complete crosslinking before crystallinity can develop. Further increase in crystallinity may be possible by decreasing the irradiation intensity while increasing the exposure time, which would, however, have a negative impact on the printing speed. To demonstrate that 3D printing can produce the same shape memory effect observed in bulk specimens, a 3D printed spiral was subjected to a shape memory test, in which it was heated and stretched into a straightened shape, which solidified rapidly upon removal of the heat source. Upon reheating, the spiral shape was restored (Figure D, Supplementary Video 2). Typically, after 3-4 cycles, the pressure of the tweezers used to hold the specimen in place caused a piece to break off. Nevertheless, the shape recovery process was repeated successfully 20+ times. We attribute this consistently high shape recovery over many cycles to the unique combination of high crosslinking density with high degree of crystallinity in the presented material.