InventShack
RoboSoda Delivery Bot - AI-designed building kit with laser-cut birchwood and 3D-printed parts
MediumAges 8-1045-60 minutes

RoboSoda Delivery Bot

Build a self-steering robot that delivers drinks on command!

This autonomous delivery vehicle uses rubber band power and a clever steering mechanism to navigate around obstacles and deliver a soda can to its destination. Kids learn about robotics, energy storage, and mechanical steering while building their own delivery bot.

5 laser-cut parts10 3D-printed parts66 hardware pieces
Design Your Own Kit

The Builder's Idea

“autonomous soda delivery vehicle”

This kit was designed by AI based on a kid's imagination. Try it with your own idea →

What's in the Kit

Laser-Cut Birchwood

  • 1
    chassis
    160mm x 100mm
  • 1
    left-side
    100mm x 3.175mm x 40mm
  • 1
    right-side
    100mm x 3.175mm x 40mm
  • 1
    front-bumper
    80mm x 3.175mm x 30mm
  • 1
    steering-wheel
    50mm x 50mm

3D-Printed PLA Parts

  • 1
    rear-axle-mount-L
    25mm x 20mm x 20mm
  • 1
    rear-axle-mount-R
    25mm x 20mm x 20mm
  • 1
    front-axle-mount-L
    25mm x 20mm x 20mm
  • 1
    front-axle-mount-R
    25mm x 20mm x 20mm
  • 1
    power-hook-rear
    15mm x 15mm x 17mm
  • 1
    power-hook-front
    15mm x 15mm x 17mm
  • 1
    steering-spring-seat-L
    15mm x 15mm x 13mm
  • 1
    steering-spring-seat-R
    15mm x 15mm x 13mm
  • 1
    cargo-holder
    70mm x 70mm x 30mm
  • 1
    steering-linkage
    40mm x 25mm x 8mm

Hardware

  • 12
    M3x8mm socket head cap screw
    for axle mounts and cargo holder
  • 6
    M3x10mm socket head cap screw
    for hooks and spring seats
  • 18
    M3 hex nut
    Included
  • 18
    M3 flat washer
    Included
  • 3
    4mm birch dowel axle
    100mm rear axle, 60mm front axles, 40mm steering
  • 4
    1.5" birch wheel (38mm)
    drive wheels
  • 2
    #64 rubber band (3.5" x 1/4")
    main propulsion power
  • 2
    Small compression spring (5mm OD x 20mm)
    steering return springs
  • 1
    2.5mm Allen key (for M3 screws)
    Included

Assembly Instructions

  1. 1

    Step 1: Lay out all wooden panels, blue 3D-printed parts, wheels, dowels, screws, nuts, washers, rubber bands, and springs. Check you have everything!

  2. 2

    Step 2: Slide the left and right side panels into the slots on the edges of the chassis base plate. They should fit snugly.

  3. 3

    Step 3: Flip the chassis over. Screw the four axle mounts to the underside - two at the back (20mm from edge) and two at the front using M3x8mm screws, nuts, and washers.

  4. 4

    Step 4: Mount the soda can cargo holder to the center top of the chassis using M3x8mm screws. This will hold your delivery item!

  5. 5

    Step 5: Attach the rubber band power hooks - one at the very back of the chassis and one at the front, using M3x10mm screws.

  6. 6

    Step 6: Install the steering spring seats on the front left and right of the chassis using M3x10mm screws, then place the small compression springs between them.

  7. 7

    Step 7: Insert the 100mm rear axle through the side panel holes and rear axle mounts. Press two wheels onto each end of this axle.

  8. 8

    Step 8: Insert the 60mm front axle through the front side panel holes and axle mounts. Press the remaining two wheels onto this axle.

  9. 9

    Step 9: Connect the steering linkage to the front bumper using an M3x8mm screw, then insert the 40mm steering axle through the linkage.

  10. 10

    Step 10: Press the steering wheel onto the steering axle. When the bumper hits an obstacle, it will turn the front wheels!

  11. 11

    Step 11: Stretch the two heavy rubber bands (#64) between the front and rear power hooks. These provide the driving force.

  12. 12

    Step 12: Load a soda can into the cargo holder. Wind up the rear axle by rolling the bot backward to store energy in the rubber bands.

  13. 13

    Step 13: Place your RoboSoda on the floor, release it, and watch it navigate around obstacles to deliver the soda!

How Parts Connect

tab and slot
chassis → left-side
Left side panel slots onto chassis left edge tabs
tab and slot
chassis → right-side
Right side panel slots onto chassis right edge tabs
screw through
chassis → rear-axle-mount-L
Left rear axle mount screwed to underside of chassis, 20mm from back edge
screw through
chassis → rear-axle-mount-R
Right rear axle mount screwed to underside of chassis, 20mm from back edge
screw through
chassis → front-axle-mount-L
Left front axle mount screwed to underside of chassis, 20mm from front edge
screw through
chassis → front-axle-mount-R
Right front axle mount screwed to underside of chassis, 20mm from front edge
screw through
chassis → cargo-holder
Cargo holder mounted to center of chassis top
screw through
chassis → power-hook-rear
Power hook mounted at rear of chassis
screw through
chassis → power-hook-front
Power hook mounted at front of chassis
screw through
front-bumper → steering-linkage
Steering linkage connects bumper to steering system
axle in hole
steering-linkage → steering-wheel
Steering axle passes through linkage to wheel for turning mechanism
screw through
chassis → steering-spring-seat-L
Left steering spring seat mounted to front of chassis
screw through
chassis → steering-spring-seat-R
Right steering spring seat mounted to front of chassis
spring seat
steering-spring-seat-L → steering-spring-seat-R
Small compression springs provide steering return force
hook and band
power-hook-rear → power-hook-front
Heavy rubber bands stretched between hooks for propulsion power

About This AI-Designed Building Kit

This RoboSoda Delivery Bot kit was designed entirely by artificial intelligence based on a young inventor's idea. Every InventShack kit features precision laser-cut 1/8" birchwood plywood panels, custom 3D-printed PLA components, and real M3 socket head cap screws with hex nuts — the same hardware used in real engineering projects.

Unlike mass-produced building kits, this design is one-of-a-kind. The AI selected from a library of parametric component templates — base plates, side panels, wheel discs, axle mounts, rubber band hooks, corner brackets, and more — then configured each part's dimensions to create a working build. All holes align to a 10mm grid system, ensuring every part connects properly.

Perfect for kids ages 8-10 who love building, inventing, and engineering. Whether you have a laser cutter, a 3D printer, or just want to see what AI can design — InventShack turns kids' ideas into real, buildable projects.

DIY Building KitLaser Cut Wood3D Printed PartsSTEM EducationKids EngineeringMaker ProjectCustom Kit DesignAI-DesignedBirchwood PlywoodPLA 3D PrintAges 8-10Medium

Want kits shipped to your door?

We're building a service that ships AI-designed kits with all parts included. Sign up to be notified when we launch.

Have your own invention idea?

Tell the AI what you want to build and get a complete kit designed in seconds — laser-cut wood parts, 3D-printed components, and step-by-step assembly instructions.

Start Designing NowBrowse All Kits