Headphone Stand

I really like the look of the original stand made by @Markus710 but its connection between upper and lower part isn't very reliable. So I tried to fix it and made a few modifications:- self-locking connector- curved upper part for better headphone stability- 220mm and 240mm tall versions AssemblingJust insert bottom part into top one and rotate 90 degree clockwise.PrintingBoth parts don't fit on A1 mini bed so top and bottom parts are on different plates but for the most of printers