Cutting a bezel plate with finished apertures out of 7075 aluminum is the kind of job that punishes any weakness in setup or tooling, and that is the challenge this build takes on. The maker runs the whole part on a Makera Z1 Pro, which is a compact machine to be asked to chew through a tough aerospace-grade alloy like this.
The workholding and sequencing look tidy. The stock is fixed to a CNC fixture bed with a silver clamp labeled 'TOP CLAMP', and a rainbow-finished end mill goes into the spindle collet to bore and pocket a circular opening plus a rounded-rectangular one. The bit clears aluminum chips along the internal wall of the cut as it goes, then the machine switches to a rainbow-coated ball-nose end mill for the interior contours and steps. A conical chamfering tool finishes by beveling the edges of those machined contours.
Two choices stand out to me. First, the cutting runs with air as the only coolant, which I find a bold call on 7075 even though the chip clearing appears to keep up. Second, the process uses a single flute tool, and pairing that with air blast seems a sensible way to keep chips moving out of the aperture walls. The rainbow coating is eye-catching, and seeing it on real cutting tools rather than shelf queens is refreshing.
The finished plate shows completed apertures, so the result speaks for itself. One thing the maker has not shared is the depth of cut per pass, and that is the number I would most like to know for a part like this.