Remix of "Window Stopper" by Thomas Agostinelli.
As my windowsills are somewhat tricky (not much space under them), I reworked the model. I also added an alternative screw without knurled head, featuring a hole for a (large) screwdriver. Depending on the space available, print and use either screw version.

The project consists of the following parts:

• Bracket: The clamp that fits over the windowsill
• Stick: The bar that holds the window
• Screw Without Knurled Head (Alternative 1): Low-profile version for tight spaces (requires a screwdriver)
• Screw With Knurled Head (Alternative 2): For tool-free manual fastening, if there’s enough space
• STEP file (for customization)