3D-Printed Reusable Children's Bingo Board

Budget: $30 - $250

I need help with deg a reusable 3D-printed board that holds a laminated 8.5 x 11 inch bingo sheet, with a built-in sliding cover system so children can mark each square during play.

Size & Fit: Must fit a standard 8.5” x 11” laminated sheet Allow tolerance for lamination thickness Inner slot: approx 8.75” x 11.25” Slot thickness: 0.2”–0.25” Grid Layout: 4 x 4 grid (16 spaces) The printed bingo card will be on the inserted sheet The board should align clearly with the 16 squares

Built-in Marking System (VERY IMPORTANT): Each square must have one built-in sliding cover Covers should move easily but stay securely in place No removable parts, tokens, or magnets Sliders must be fully enclosed within tracks so they cannot be removed

Durability Requirements (CRITICAL): Please design this to be very strong and resistant to breaking:

Use thick, sturdy components: Frame: approx 4–6 mm thick Base: approx 3–4 mm thick Sliders: approx 3 mm thick Sliders should be large and simple, not small or delicate Use enclosed rail/track system so sliders cannot pop out Include end stops so sliders cannot be pushed out of the track Avoid thin clips, hinges, or fragile parts Rounded edges and corners for safety and durability

Safety: No small detachable pieces Smooth, rounded edges Safe for young children Designed for repeated classroom/therapy use Material Recommendation:

Please design this so it can be printed in PETG for better strength and slight flexibility (less likely to snap than PLA).

Design Goal: Very durable (can withstand dropping, pushing, and frequent use) Simple and clean design Easy for children to use Easy to reset between sessions

Deliverables: STL file for the board STL files for any built-in slider components (must not be removable once assembled) Brief explanation of how the sliding mechanism works (Optional) Render images for visualization

Please include: Examples of similar designs you’ve created (if available) Estimated timeline Total cost including revisions

Thank you!