This name tag is custom configured in the slicer, using a frame stl and individual letter stl files:
There are two cylindrical pockets in the back of the frame for ¼" diameter (6mm will work fine) magnets (I used 1/16" thick but almost any thickness will work, within reason). Glue those firmly into the pockets and use two more on the inside of your shirt to hold it on!
The author hasn't provided the model origin yet.