Fluidic interaction interfaces have found wide potential applications. However, current fabrication processes are intricate, and materials are expensive. This limitation hinders the potential for creating affordable, flexible fluidic sensors in personal fabrication. We propose LiqSensor, a design and fabrication pipeline for making various fluidic interaction components with saltwater and silicone. A series of flexible sensors were made by utilizing saltwater’s fluidity and conductivity and through a method for fabricating silicone shells for the sensors. The evaluation was conducted to explore technological parameters and assess the practical feasibility of the fabrication pipeline. And we organized a user-observing workshop for non-expert users. By outputting prototypes, the results demonstrate the feasibility of the LiqSensor as an inexpensive, interaction-rich prototyping method with wide potential, and we believe this fluid components pipeline is important and imaginative for flexible interaction and even interaction in water environments.