This work investigates the low-velocity behavior of cellular sandwiches fabricated using Fused Deposition Modeling (FDM) with Polylactic Acid (PLA) and Polyethylene Terephthalate Glycol (PETG) materials. Initially, both materials were characterized through tensile testing to determine their mechanical properties. Following this, low-velocity impact tests were conducted using a drop weight impact testing machine to evaluate the dynamic response of the structures. The study focuses on hexagonal and auxetic cell embedded within the sandwich structure owing to their superior mechanical efficiency. During impact testing, impact forces were closely monitored, allowing for a comparative analysis of the behavior of PLA and PETG under two different initial velocities. This research seeks to improve the insight into material and structural influences on impact resistance in lightweight applications.