Interchangeable Modular Letter Sign

This is a modular, interchangeable letter sign designed for easy printing, smooth assembly, and real-world durability.The system utilizes sliding letter slots, allowing you to swap messages at any time. It prints support-free and is optimized for fast printing using low infill while maintaining strength.The design went through multiple revisions to solve real-world issues:• Custom corner connectors prevent slot interference during assembly• Optional glue-on rear support eliminates panel bowing• Rear support doubles as a wall hanger• Optimized for 0.4mm layer height and 5% infill• No supports requiredThis model is designed to print cleanly on printers like the P1S and similar machines.Perfect for:• Motivational quotes• Seasonal messages• Office décor• Classroom boards• Gift projectsThe modular design allows you to expand the board or reprint individual parts if needed.Step 1 – Print All Required PartsPrint:• Main board panels• Corner and Side connectors• Letter sets• Optional rear suppo