From what I have been reading, 7075 aluminum is a lot “harder” and “stronger” compared to 6061 aluminum. I’m interested in using it for a project, in which I would be drilling 1" squared holes throughout a foot long piece.
Has anyone successfully cut this grade of aluminum alloy using the HDM? What end mills and feed speeds would you recommend? Any other tips or tricks?
I have used both 1 flute Datron and 2 flute dormer endmills. Taking side cuts between 0.3-0.6 mm 6-10mm deep. Shallow cuts no more than 1mm deep and up to full endmill width. Alcohol mister makes big difference. Feeding 2000-3500mm/m