The paper presents experimental results related to the influence of the main parameters of the solid wood milling process - feed speed vf and uncut chip thickness ae, on the roughness of the obtained surfaces during the processing of tropical meranti wood (Shorea leprosula). They are part of a more extensive study by the authors, which also applies to other wood species widely used in furniture production - Scots pine (Pinus Sylvestris) and beech (Fagus Sylvatica). The machines used are three in total - two jointers and a planer. The jointers have a different construction of the cutting shafts - with flat knives and with helical cutterhead. The planer has a cutting shaft with flat knives. The studied parameter is Rz, and an electronic profilometer was used for its reading. The experiments were carried out in actual manufacturing conditions using the method of planned regression analysis. The levels of variation of the studied factors were determined on the basis of preliminary experiments, as well as the technical capabilities of the respective feeding mechanisms. Based on the obtained results, regression equations were derived that can be used to calculate the roughness depending on the feed speed and uncut chip thickness within the studied limits. Practical recommendations were made, and the results were compared with previous studies. [ABSTRACT FROM AUTHOR]