I'm a bit disappointed with Arcas. It looked super cool in the product shots, but the assembly feels wobbly and unstable. I also had a very hard time assembling it since the pieces fit very loosely and don't secure, forcing you to hold several pieces together at once. I have some minor motor issues with my hands, and even I struggled, so I can't imagine what it must me like for someone who has even more motor issues.
Update: I will say that Wooj responded and revamped the assembly video for this, which is incredible. I still think that CS.01 Arcas is a cool looking lamp but the assembly is a little wobbly and wonky. However, the new instruction video is much much much more accessible with specific mentions of the names of pieces, so I'm updating my review to reflect that!
On top of that, the assembly instructions are not even CLOSE to being accessible. They assume you have the ability to watch a video and assemble based on sight alone. The narrator never calls any piece by name, only ever saying "this piece" or "like this" instead of saying "the legs" or "the retaining ring" or "until secure". This creates a problem for visually impaired folks, since they can't use an accessibility tool (a screen reader could read out written instructions, for instance), and they can't rely on the description alone. Hearing impaired folks might also have a hard time, since any generated captions wouldn't be very descriptive based on the narrators lack of detail.
I would really like to see some improved accessibility in both the product itself and the associated instructions.