system
A chat on subreddit /r/pcmasterrace
human
Speaking from experience, if you’re mounting the arm to a cheap IKEA desk, put a few sheets  plywood on both sides of of the table between it and the mounting clamp
gpt
This looks like solid wood desktop option from ikea (the edge is same as top), but I previously used mine 34”display attached to cardboard desktop, and it pressed the surface down by few mm.