Color Code (SVG)

• Black – Cut
• Green – Score
• Orange – Engrave (depth-critical)
• Purple – Notes / Reference only (do not cut / score / engrave)

Engraving Depth (Critical)

• Maze floor engraving should be ~1 mm deep (varies by plywood + laser).
• Always test on scrap of the same material.
• Good test: stack a second sheet on top and confirm the BB still rolls freely.
• Light sanding or careful chiseling helps smooth engraved paths.

Cleanliness Matters

• Keep glue out of moving parts and maze channels.
• Wax helps: moving parts should slide, not grind.

Start Here

• Confirm engraving depth first, then sand/clean the engraved maze floor so the BB rolls freely.
• Dry-fit each step as you stack layers.
• Pivot pins must have wiggle room — don’t glue them and don’t force a tight fit.

Recommended Assembly Order

1. Bottom + Layer #5:
   Start from the bottom layer and glue Layer #5 on top. Layer #5 has three engraved pockets for spring clearance and the final BB resting position.
2. Layer #4 (mechanism layer):
   Install the two moving pieces and the two springs. Lightly wax the moving parts for smooth travel. This layer holds the pivot point — place the pivots and hinge pieces here (with clearance).
3. Layer #3 (clearance engraving):
   Sand the engraved area as needed so the BB can move freely when Layer #2 is placed on top (do not glue yet).
4. Layer #2 (maze + magnet):
   Place the magnet (if using) in one of the two magnet locations — usually one is enough. Use a 3 mm × 1 mm magnet, glued to the wall closest to where the BB rests.
5. Clamp-test with Layer #1 (do not glue yet):
   Clamp Layer #1 on top and verify:
   • The BB reaches the finish smoothly
   • The button works with the BB in the finish position
   • The BB can be returned back toward the magnet
   Only glue once everything works smoothly.
6. Glue Layer #1:
   After confirming movement + button function, glue Layer #1 in place.

Lid (Do This Last)

• The lid is 2 pieces. Glue the lid layers together after the box body is complete so you can confirm orientation.
• Test-fit the latch and hinge parts before gluing — material thickness affects sizing.
• Glue the lid onto the hinge pivots first, then glue the latch in the correct orientation.

Operation

• To close the box, the BB must be in the finish location.
• To reset, reverse the maze path to return the BB toward the magnet.

Adhesives

• CA glue works well for small parts.
• Wood glue + clamps works well for the layer stack.
• Avoid glue near moving parts and maze channels.