Cutting Aluminium Composite

[Rye]

Hi Komatias,

Thanks for the reply. The screech occurs when the gantry is roughly between 15 - 20 cm from the front of the machine. Can be quite loud too. So I've been avoiding cutting on that area of the machine. The gantry also isn't quite square with the base of the machine. If I move the x-axis from one end to the other, the z will start fine before cutting into the spoiler board by about 0.25 to 0.50 mm(as a guess). I will make a video and upload it soon.

Despite the problems above, and a few mishaps, I have been managing to cut MDF, HDPE and acrylic, as well as engrave, reasonable well. Mostly been using 2 flute 3mm end-mills for cutting acrylic, and a cheap 60 degree v-bit for engraving (looks like it would take someone's head off if it flew off the machine.)

Unfortunately I don't have any single flutes for cutting aluminium (I've just put an order in). Do you think a 2 flute 3 mm end-mill, if I cut reasonably fast and shallow, will do the job? The aluminium will be thin: 1.5 to 2 mm. If I use composite sheets, it'll be even thinner.