3D Aluminum T-rex on a Hobby CNC | LongMill CNC
The LongMill (www.sienci.com) is Sienci Labs' new larger format benchtop CNC machine. In this video, it got a taste for aluminum.
The cutting time was around 4 hours. The feeds weren't explicitly calculated since this job was run as a stress test to see how the machine would handle it.
A lot of the bulk material removal was done using a 16mm dado router bit at 1800mm/min with 40% step over while running the router at around 25k RPM. Then a waterline cleanup was run with a single flute 1/8" (3.2 mm)˜ alm flat end mill at 1200mm/min and 0.5mm step down. And finally an 1/8" (3.2 mm)˜ ball nose for the linear passes running at 2000mm/min and 10% step over with the router at 15-20k RPM.