The question behind this build is one every small machine owner eventually asks: how deep can adaptive clearing actually go on a desktop CNC before something gives up? The maker is not cutting parts here. This is a deliberate stress test in aluminum, run on a 3020 Pro Ultra inside a custom enclosure, pushing the limits of 5mm adaptive clearing to find out where the ceiling sits.
The setup is tidy. An aluminum block sits clamped in a metal vise, with a flexible blue and orange articulated nozzle aimed at the cutting area. The tool is a 5mm endmill with a 1 inch length of cut, wearing a rainbow iridescent coating. Macros were set up to run straight passes with even engagement. Spindle speed is set to 24,000 rpm against a 30,000 maximum, and it sags to 22,500 rpm while cutting, with feeds based on that lower figure. A chip load of 0.06 worked nicely, and feeds were tuned by ear after being set from chip load.
What stands out to me is the method: going progressively deeper and trading radial engagement for axial engagement. The maker is also candid that adaptive cutting keeps changing engagement, which makes it a poor test in their own view. Results look respectable for a stress cut. The finish was fine for roughing, temperatures were okay, and the cut came out okay overall.
The open question is the sound. It seemed very aggressive to the maker, the spindle starts to bog down slightly, and they are unsure whether it signals imminent failure. A two-flute endmill with a 5/8 length of cut is on the way, and a shorter endmill is planned for general roughing when not cutting deep.