This report describes the process of the thesis project conducted by Lucas Rosén and MarkusSunesson in the spring semester of 2023. The project was assigned by Husqvarna AB and represents thefinal stage of the authors’ education in mechanical engineering with a focus on product developmentand design.Husqvarna AB values continuous development and innovation. In their efforts to improve and renewtheir range of grass trimmers and accessories, a project was initiated with the aim of creating newconcepts for an accessory that can effectively remove weeds. The goal was to provide individuals withgardening interests the ability to easily clear weeds between delicate surfaces such as stone tiles withoutcausing damage.The project was carried out as a concept study, implementing a product development process. Themethods used from preliminary study to prototype manufacturing are described to clearly illustrate theprocess in its various stages. A requirement specification was defined during the project based onmarket analysis. This specification served as concrete data for the requirements to be met and formedthe foundation for concept development. It can also be used as a basis for further project development.The theoretical framework for the project draws from various theories in preliminary study, materialselection, manufacturing techniques, additive manufacturing, and virtual prototype development.Subsequently, tests were conducted on different materials and competitor solutions to gather data forlater use.According to potential customers, emphasis was placed on the product’s efficiency and the ability toreplace the cutting material. This was taken into consideration during concept generation and heldsignificant importance in the subsequent concept selection. The remaining concepts were furtherdeveloped for optimization, both as a whole and for manufacturing through injection molding.After several iterations, a final concept was established. The concept was first 3D printed using FDMtechnology to verify its volume and functionality. It was then printed using Husqvarna’s SLS printer.The prototype underwent testing and evaluations within the project’s limitations. To perform accuratetests, the prototype needs to be manufactured using injection molding, as printed plastic lacks thenecessary material properties. Going forward, Husqvarna AB has access to the project’s data and cantherefore continue the development process and benefit from the project if needed.