Here is a project I have been trying to finish for over a year and finally took time this week to complete it! For Halloween this year I am going as Tony Stark (from Iron Man 2). I designed the chest arc reactor screenshots from the movie and 3D printed the parts in Carbon Fiber PLA to make it lighter. To attach the part to the shirt I used two parts and some simple 5/8" screws.
This was a fun project but it was a busy week and now I'm exhausted! Hope you enjoy your Halloween!