Springy watch stand

Update21-02-22. Made a base for a single version(springwatchstand_singlebottom.stl), and rounded some corners to make it easier to assemble.


A modified version of 3rdpigs watch stand.

Changes:
1.smaller size, circumference range 162 to 180mm(6.3 to 7")
2.added material around the center slide and sidewall to increase stability
3.foot removed and replaced with a peg for board mount