This is a remake of a badge holder but the depth was too much for mine so I sized it down.
My badge is 85.5mm x54mm x .8mm
For removing supports, the best way is to get a knife, slice the top layer, slice the bottom layer, and then come in with the blunt side of the knife and push the entire support structure out.
The author remixed this model.
Changed sizing for better fit for my work badge.