The article is focused on research of influence of material removal way on thin-walled part quality by milling. There were chosen three ways of material removal. Rib parts produced using these various ways of material removal showed different quality of surface already on visual inspection. To quantify the dimensional deviation of parts these were scanned by GOM ATOS 1350 and compared to CAD models. The results are colour deviation maps that showed suitability alternatively non-suitability of some of the ways of material removal and also influence of cutting environment on the quality of parts produced some of these ways.