1. Material Specification: Use only 1.75mm PLA filament for your designs.

2. Printer Capacity: Ensure your design fits within the maximum build volume of the XL Prusa, which is 355 x 355 x 355mm.

3. Joinery Techniques: Design mating parts that fit together well. Remember to include proper joinery methods in your submission.

4. Tolerances: Account for manufacturing tolerances to ensure parts fit together as intended.

5. Orientation: Consider the orientation of the part during printing to minimize the need for supports and maximize structural integrity.

6. Supports: Strategically plan where to place supports to prevent overhangs and ensure easy removal without damaging the part. Avoid areas where support scarring could compromise the design.

7. Dimensional Accuracy: Keep in mind the limitations of FDM printing for maintaining dimensional accuracy.

8. Material Behavior: Design with material expansion and shrinkage in mind to ensure the final dimensions are accurate.

9. Build Plate Preparation: Leave a border around the build plate to avoid the model sticking too close to the edge, ensuring stability during printing.

10. Surface Area Considerations: Maximize the surface area in contact with the build plate to enhance stability during the printing process.

11. Multi-color Designs: For multi-color prints, design each color area as a separate body to ensure precise color alignment.

12. Exporting Designs: When exporting your files, maintain the position to ensure the alignment of multi-part or multi-color components remains consistent.

1. 3D Model Formats: Submit your 3D models in STL, STEP, or OBJ formats. Ensure compatibility and precision in your submissions.

2. File Organization: Provide one file that includes the full assembly of your design. Additionally, export all individual bodies as separate files without altering their positions to maintain alignment.

3. Context Renders: Include up to five JPEG images showing your design from various angles to give context and enhance understanding of your submission.

4. G-code Submission: Provide the G-code of your model slice to specify the orientation of printing, infill rate, and types and locations of supports. This helps in understanding your choices for print preparation.

5. Title and Description: Clearly title your submission and provide a detailed description of the stool design, emphasizing unique features and design rationale.