Chain Reactions & Systems
Domino Machine
Arrange 20 precision-printed domino tiles into runs, curves, and branches, then trigger a perfect chain reaction with one tap.
Photos coming soon
About This Kit
What makes this kit special.
Every tile is 3D-printed to the same mass within 0.2 grams so that chain failures are always caused by layout errors, not tile variation. A laminated planning grid lets children design before they build, the same habit every engineer uses.
Designed, 3D-printed, and assembled by 9th-grade students at West Shore Jr/Sr High School, Melbourne, FL — a student-led nonprofit serving Brevard County.
Support this kit
KitCraft Collective
Help us put the Domino Machine in a child's hands.
Every donation goes directly toward materials, 3D printing, assembly, and delivery to pediatric wards and shelters across Brevard County.
Cost to sponsor
You fund
1 full kit
- 100% to kit production — zero overhead
- Delivered by students to verified orgs
- Handwritten letter in every kit
- Tax-deductible contribution
What they'll learn
Learning Objectives
- Energy transfers through a chain of objects01
- Planning before building improves results02
- Diagnosing and fixing system failures03
- Iterative testing and adjustment04
- Cause and effect in physical systems05
- Spacing affects chain reliability06
Hands-on exploration
Activities
Space 10 tiles at 4 cm intervals and trigger the run
Test 3, 4, and 5 cm spacing and find the reliable range
Build a 90-degree curve using the curved track guides
Create a Y-branch that triggers two sequences at once
Sketch a 20-tile layout on the planning grid, then build it
Deliberately place one gap too wide and predict where the chain stops
Complete all 5 challenge card layouts in order
Where Kits Go
Built here. Delivered with love.
Every kit is hand-delivered by the students who built it to verified partner organizations.
Pediatric Wards
Delivered directly to children in hospitals across Brevard County who need a moment of joy and wonder.
Partner Schools
Distributed to title-I schools and after-school programs serving underserved communities.
Community Centers
Sent to shelters, family resource centers, and nonprofit organizations across Melbourne, FL.
Behind the Kit
From first sketch to final delivery.
CAD Design
Students model every component in Fusion 360, optimizing geometry for FDM quality, structural integrity, and child-safe tolerances.
3D Printing
Parts printed layer by layer on school printers using BPA-free, food-safe PLA at precisely calibrated settings.
QA Inspection
Every piece hand-inspected — edges deburred, tolerances verified with calipers, dry-run assembled.
Kit Assembly
Parts sorted in build order, bagged, and paired with instructions and a handwritten letter from the builder.
Delivery
Hand-delivered by students to partner schools, pediatric wards, and shelters across Brevard County.
What's inside
Materials Included
- 20 3D-printed domino tiles, mass controlled to +/- 0.2 g each
- 4 curved track guide sections
- 3 straight track guide sections
- 1 Y-split connector guide
- 1 3D-printed trigger paddle
- Laminated dry-erase planning grid
- Dry-erase marker with eraser cap
- Illustrated instruction booklet
- Canvas drawstring storage pouch
Child-safe by design
All components are BPA-free, burr-free, and verified safe for the target age group. Engineered for repeated assembly and disassembly.
Every kit includes
Bonus Extras
Beyond the build materials, every kit includes thoughtful extras — chosen to delight and make each child feel genuinely seen.
- Handwritten letter from the student who built your kit
- Chain Reaction Engineer certificate
- 5 layout challenge cards, Level 1 through Level 5
- How Dominoes Work fact card
- Blank layout design card
Help us deliver the Domino Machine to children who need it most.
Every kit starts with a generous sponsor. Your $24 covers materials, 3D printing, assembly, and hand-delivery to pediatric wards and shelters across Brevard County.
100% toward production · Zero overhead · Tax-deductible
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