DLP resins were prepared by mixing the macromonomers (PEGDMA or PEGDA), BAPO-PEG (2.0 wt%) or BAPO-PEG-LN (1.0 wt%) or BAPO (1.0 wt%), Sudan I (0.03 wt%), and vitamin E (0.3 wt%). The resins were sonicated at 70 ºC until homogenous mixture was obtained. The printing was performed at temperature of 90 °C (40 °C for PEGDA 700), with layer thickness of 50 µm and exposure time of 3-6 s. The light intensity of the printer LED was 25.67 mW cm -2 . After the printing, the printed objects were cleaned in acetone and 2-propanol, and then cured in the UV chamber for 15 min. In the case of "with-water" printing, LAP (1.0 wt%) was used as the photoinitiator and NVP (8.0 wt%) was used to dissolve Sudan I before adding it to the photopolymers.