steel sheet holder with seesaw eject button - Creality K1 max Edition

This is a "modified" version of Chewey's “mildly” overengineered remix of Whity's excellent “slightly” overengineered Expandable Steel Sheet Holder for the MK3/S print sheets.

I just wanted to have a steel sheet holder with an eject button for my K1 max :)

lengthen to fit K1 max steel sheets