I’m working on a proper aluminium project now - in the past I have only used 3mm thick aluminium and I’m jumping up to 15mm bar and I’d really appreciate some advice.
as you will see there is a number of holes in it that are 6.5mm wide. For the entire project I want to use 1 4 flute 6.35 cutting piece - however I don’t know what settings would be best to use to achieve a good result.
Any advice would really be appreciated on feed and cutting / plunge/ depth rates.
the current model settings are for wood as I wanted to make a test model.
Thanks I did allot of reading and had a couple of goes at it last night/today.
I had reasonable success going at 1500mm a min and 0.1mm cuts. It went well till I got to the small holes where the bit got gummed up about 4 holes in. This had ramifications later when it welded it’s self to the bit.
I think next time I will use a 1/8 drill bit to pre drill the holes then mill them as a 2nd pass to reduce the load.
I managed to salvage the piece it did need more tlc by hand but a good learning experience.