I've been quite closely involved in the development of the Clueboard/Clueboard case and I'd like to share some perspective on the complexity of the manufacturing process and the corresponding benefits.
One of the big distinctions between this case and the norm is that it features an integral switch mounting plate. Typically, cases are essentially frames for the plate, which usually starts as 1.5mm stock, and is usually cut using a 2d fabrication process like laser cutting, water jet cutting, stamping, etc. This design approach has a few draw backs when it comes to the tactility of the product. Specifically, plates tend to be quite flexible due to the thinness/material removal that is mandated by the switch mounting geometries. This means that they can move relative to the case/frame in use, contributing to issues like the dreaded ping, as well as an overall reduction in sensation/feedback from the switches themselves. In the Clueboard, the mounting plate is machined directly into the top case, which starts life as a half inch thick piece of 6061 Aluminum. We remove material where necessary to provide proper clearance and mounting geometries for the switches, and we create local reinforcements wherever practical, some of which are more than twice the nominal thickness of a typical keyboard plate. Additionally, the through holes for the switches are individually profiled using a tiny end mill, driving up machining time, but yielding a fantastic surface finish and precise snap fit geometries.
That isn't where the complex machining ends. For instance, the entire outer profile of the case has been machined using tapered end mills, which are primarily used by the tool and die industry. Rather than using feet that have to be separately installed, the tilt of the keyboard is directly integrated into the case. We have also heavily iterated on the surface finish of the case, arriving at a light bead blast with a slick, satin surface.
In concert, these elements come together to create a keyboard that is, in my opinion, sensorily unparalleled. The tactility and noise of the keyboard are fanastic, the keyboard really does a great job of bringing the best out of any switch you put in it. It is by no means the cheapest keyboard to produce, but that wasn't our goal. Our goal was to create something world class, and I hope that you'll give it a try.