Foam backed Poster Corner Protector

thingiverse

I whipped up a speedy corner support for a foam sign that's only 5 millimeters thick! This little guy might just save some people's posters from getting bashed around! You can easily scale it up or down to fit the thickness of your specific posterboard, making it super versatile! Just remember to print this design on its side and rotate it by 90 degrees - that way you'll get a fast and effortless print with no infill needed.