About this 3D model

Have one of those generic kids fort building kit consisting of rods and connecting balls? Are the structures falling over because they are too flimsy? These 90° corner braces in 1, 2, or 3 axis worked for my kids and they may work for your kids' fort as well (or for your fort… I won't judge)! Designed to use as little material as possible and print with no supports, so the center wall is intended to be 1 line-width thick. You should be able to print four of these with ~150g of filament. In the kit my kids have, the rod length is ~16-inches, and the diameter is approximately 9.3 mm. By user request, I've added a version for rods that measure 10mm in diameter (0.7mm larger).