In this project work an investigation into Minimum Quantity Lubricant (MQL) and wet machining in milling processes of AISI 6060 Aluminum work material has been carried out with the main objective is to determine the effect of lubrication conditions on the surface roughness. Three other parameters were also consider in this study; feed rate (FR), depth of cut (DOC) and cutting speed(CS).The levels each parameter had been selected is four levels. The ranges of feed rate 0.05mm/min, 0.15mm/min, 0.20mm/min and 0.25mm/min depth of cut used were 0.2mm, 0.4mm, 0.6mm and 0.8mm whereby the cutting speed values were 600mm/min, 800mm/min, 100mm/min and 1200mm/min. © 2015 Elsevier B.V., All rights reserved.