Analysis and improvement of the crimping handtool design have been performed. First of all, a technical description of the existing handtool assembly was made. The handtool was disassembled into its component parts. Using reverse engineering methods, these parts were analyzed and their geometric features as well as their dimensions were measured. That way enough data for their 3D digitialization was gathered. These 3D models were assembled creating the 3D handtool assembly, thus the digitalization of the handtool was fullfilled. The peak grip force of 570 N was adopted as the relevant force for further calculations. This grip force is transmitted to the slider element via the handtool mechanism and it causes the appearance of the maximum force on the slider at the last possible position that the mechanism can take. An analytical calculation using the Lagrange virtual work principle and a dynamic simulation of the tool mechanism using Autodesk Inventor were performed to define the force on the slider at the end position of the mechanism. The results obtained by these two methods are almost identical, which confirms their accuracy. Based on this knowledge, the maximum calculated force on the slider of the handtool has a value of 10218,1 N. This force represents the maximum load the handtoll is subjected to and it is the relevant load value for the numerical finite element analysis which was performed on the handtool frames, movable handle and the toothed levers. The results of this numerical analysis showed the possibility of the handtool frame element design improvement by replacing bevels with roundings and reducing it's thickness from 2,5 mm to 2 mm. Due to the fact that the movable handle and the toothed levers are made of the same material and the same sheet metal thickness as the handtool frame element, it is economical to improve their design by reducing their thickness from 2,5 mm to 2 mm as well. These improvements will cause the change in lenghts of the connecting elements of the handtool assembly.