 The mart-insulator kappa-dash BDTTTF-2CU2-CN-3 has been a strong candidate for a gapless quantum spin liquid, but recent experiments suggested a spin-gapped phase below 6K. Study the entropy of this phase by driving the system through the metal-insulator transition with a strain engineering approach. This article was authored by Apastigo, Waikawasugi, Hsakuwakoji, and others.