Sorry for the delayed reply!
That’s a cool lil’ stand! Are you’re planning for the bottom to be two layers (one with the web of cutouts and one just for the lip going around the perimeter) and then the a round things to be a few layers (six or so?) that would be stacked up and glued? It that close? That sounds very doable, but I don’t think it would be much of a “test”, if you know what I mean. I’m guessing you’d agree, but maybe you have different plans that would be more of a “test”. Also, although I bet I could get all the layers to be stuck together, I have my doubts about being able to do it without getting unsightly glue squeeze-out all over the place.
I can do engraving, but getting an engraving to be close to half the depth might be tricky. I did an engraving matrix/test/sample on this material, and most of the power/speed settings I tried only went down about 1mm (roughly 1/3 of the thickness) or less. After the ~1mm engraves they jump to going almost all the way through.
I see that you saw that Fusion 360 tutorial where they showed how multiple layers can be used to make effective mortise and tenon joints. This one…
Although I like the idea of simply engraving the mortise, getting the depth right might be a task other people have decided is more trouble than it’s worth (not just me). With thicker material I would guess that you could just make the mortises deeper than they need to be, but that doesn’t seem practical with 1/8" stock.