In our previous paper, 31 (link) 0.01% w/w azobisisobutyronitrile (AIBN) was added to the resin to enable post-print thermal curing to drive further polymerization and obtain improved mechanical properties. However, we find that the 385 nm source of our new 3D printer activates AIBN such that it is consumed during 3D printing, and is therefore unavailable for post-print thermal curing. We tried an alternate thermal initiator, benzoyl peroxide, but found that it was likewise activated during 3D printing. Therefore, we employ an optical curing approach in this paper. The key is to use a photoinitiator with absorbance that extends to longer wavelengths than the long wavelength cut off of the UV absorber such that light in this region penetrates through the device. For example, in Fig. 3(a), the Irgacure 819 absorption spectrum extends to ~460 nm, while NPS and Martius Yellow drop off at ~440 nm. For post-print optical curing we use an inexpensive consumer UV nail curer (54 Watt Professional UV Nail Dryer, Royal Nails) that emits a broad spectrum.