Originally Posted by barnesy I have to drill & ream 5000 3mm holes in 6061 alum. plate 10 mm thick.Any suggestions on speed & feeds for the drill & reamer would be a great help .
max rpm is 6000. holes are all the way through the plate. I will have polycarbonate sheet under the plate . Will be using alum. tapmatic as coolant |
drilling 3mm hole:
350f/min = 11320 rpm
400f/min = 12937 rpm
got these answers off this site: using the imperial equivalent .1181" or 3mm.
they have a calculator on the page if you want to double check.
http://littlemachineshop.com/Referen...tingSpeeds.php