Heavy Duty Technician's wallet

This is an upgraded version of my earlier version of my technician's wallet:
http://www.thingiverse.com/thing:1656147
Source files for editing can be downloaded from the original version.

Upgrades include:

* One of the micro SD slots has been expanded by 1mm to allow the use of a hard backed NFC tag.

* The top and bottom have been thickened by 1mm for greater strength

* All tolerances checked and refines ever so slightly.

Calibration is recommended before printing

This wallet