Objective: Canal shaping is an important step in endodontic treatment and involves the creation of a continuous, smooth, and clean path for root canal filling. The correct shaping of the root canal is essential to ensure a successful endodontic treatment. This research aims to assess the vertical forces exerted by the Reciproc (R) and Reciproc Blue (RB) systems during canal shaping procedures. Methods: A total of 26 maxillary premolar teeth with straight and constricted canals were selected for the study. The teeth were fixed in a standing position and connected to a force-analyzing device to measure the forces during canal shaping. The initial step involved manual preparation of the glide path using K files of size #15. The canals were then shaped with steady and gentle pressure using an R25/RB25 file with a .08 taper. The slow "in-and-out" movement of the file with a 2 mm amplitude ensured the efficient shaping of the canals. The shaping process was repeated three times and was followed by irrigation with a 1% sodium hypochlorite solution after each insertion. The time taken for canal shaping was analyzed using Student's t-test, while the inward and upward peak forces were analyzed using the Mann-Whitney test. All statistical analyses were performed using SPSS software, with a 95% confidence level. The results of this study would provide valuable insights into the vertical forces generated during canal shaping with the Reciproc and Reciproc Blue systems. Results: A single file was placed into each root canal successfully three times, shaping each one to the WL. The total real-time force inside each group rose as the file was successively inserted. The two groups' inward peak forces varied from 1.71 to 8.38 N, and the R group had lower peak forces than the RB group in each of the three insertions (P-value < 0.05). At each insertion, both groups showed similar peak forces that were upward and varied from 1.50 to 3.26 N (P>0.05). The average periods needed by the RB and R systems to fully form the canals were 23.93±4.15 and 22.01±3.08 s, respectively (P-value >0.05). During canal shaping in this experiment, there was no file breakage. Conclusions: The unique blue heat treatment applied to the Reciproc Blue file system had a noticeable impact on the forces generated during canal shaping. Results showed that compared to the Reciproc file system, the RB system produced significantly higher inward peak forces.