These panels are designed to hold these square mirrors (1" edge length").
There are pockets at each corner of the triangle that I fill with a dab of E6000 adhesive.
No reason this couldn't hold other 1" squares, like tile, veneer, other prints, etc. Get crazy with it!
What are Polypanels?
"Welcome to the world of Polypanels, a system of snap together parts that let you build whatever you want! It’s like an open-ended construction toy for making functional things, harnessing the power of 3D printing and the community to make it truly limitless."
Printing Guidelines
A high wall thickness of 5 shells/perimiters will ensure solid snap connectors. From there settings can vary based on your desired outcome. Print solid for the most robust and long lasting joints, or print a lower infill with 0 top and bottom layer thickness for a cool exposed infill pattern.