clip for folding stand

# Add on to Universal Phone/Tablet Stand with Adjustable Angle

Found the [thing:692523](https://www.thingiverse.com/thing:692523) useful but decided to add a support as a short sleeve clip.

Without the clip the inner support frame can drop through the outer frame. The clip stops the inner frame from moving in the wrong direction which helps allow the set up be more intuitive. Printing this as a gift and don't want user to have any confusion.

## Fits if Original part Printed at 130%

The STL file as is fits original version 2 stand if the stand is printed at 130% and the sleeve is printed at 100%. I have included a OpenSCAD file so that dimensions can be adjusted to fit other scalings of stand.

- The XYZ dimensions on the parameters in the SCAD file correspond to the orientation in the original version 2 stand file.
- The final orientation of the sleeve part was rotated to get maximum strength for the part as a sleeve. Recommend printing this part with this orientation