This thesis describes the results of an ergonomically adapted spacer block, used for manual work in a straightening press. This thesis has been performed at Scania Ferruform in Lulea, Sweden, which is an industrial enterprise producing e.g. rear axle bridges used in Scania AB trucks and buses. The report has been performed according to Lulea University of Technology (LTU) guidelines for a thesis work á 15HP. The results of the thesis presents a multi designed prototype solution of a spacer block which is designed to be highly flexible and solve an ergonomically complex work moment. The solution for example solves heavy lifts by reducing weight and introduces more ergonomically work position and movements. The results should still continue to be verified before going into the live work process, this to reduce risks and pass validations which is not within the scope of this thesis.Three concept solutions have been evaluated after research and identification of the problem. Theoretical studies, work experiences, sketches, available solutions and limitations have been applied to analyze three prototype solutions. Each of the selected prototypes have been designed to a 3D CAD model and produced to be tested and evaluated in a live working environment with a concept selection matrix. Integrations to find the best applicable solutions have been performed in coherence with design and production personel at Scania Ferruform, but also discussed with supervisors at LTU.Recommendation of future implementations, verifications and alternative solutions is handed over in this thesis, but also with internal communication to secure Scania Ferruforms’s confidentially agreements.