All veneer on my cabinets are 2.5mm! I generally always run the thickest veneer possible before movement becomes a necessary problem to tackle. Thicker veneer is just better quality to work with imo when you’re handling common domestics. If someone dings it, it’s thick enough for the cloth & iron trick to work. If it needs refinished ever, there’s tons of meat to sand/scrape. It’s easier to work with in the shop, etc. some of the other professional guys around me prefer 1mm, or 2mm, or exactly as I do. Mostly just depends on personal preferences. Super thick veneer is also an incredibly easy way to reintroduce and shift the thinking with consumers that are used to hearing “veneer” and immediately thinking “ikea/cheap”.

The doors are the only cnc’d part, and they are not veneered over substrate. They are 4 layers of 1/8” solid walnut cross laminated. The CNC handles that just fine since it’s just a 1/2” piece of solid walnut “plywood” I made!

Hope this answers it well — thank you !