Spring mount plate by u/RangerXML
Spring mount plate by RangerXML
Published December 20, 2020
Actually, a top mount PCB with added springs.
According to the author, bottoming out is a soft feeling with PCB mounted Gateron Yellows.
More pics: https://imgur.com/a/8oqL2ka/
Published on Sun 20th Dec 2020. Featured in KBD #5 (source).