It says "Original Lego parts" on the page.
Apparently, it was created by Rick Lenssen [1], who works at the Development & Engineering department of ASML. It seems more likely that he used existing bricks, instead of molding new ones.
Apparently, it was created by Rick Lenssen [1], who works at the Development & Engineering department of ASML. It seems more likely that he used existing bricks, instead of molding new ones.