Jay, Kay & ElleAll games Machine Shop
Jay, Kay & ElleAll games
Mobile
A room in Jay, Kay & Elle's World

Machine Shop

Build it. Turn it. See what happens.

Starry work table Toy train Music box Elle
Something needs fixing. Want to see what makes it move?

Start at the Gear Bench. Tinker opens after Missions 1–3.

Take your time
Gear + Axle + Belt + Engineering + Network + Machine

54 machines to figure out

Turn it. Watch what happens. Change it and try again.

Gear Bench · 1 of 12
Gear Bench

Wind the Music Box

Connect the crank to the music box.

Need a clue?Open only if you want one.
WHAT TO NOTICETouching Gears

When two gear teeth touch, turning one gear makes the next gear turn.

CRANK0.0 turns
TOY0.0 turns
SPEED—
WAY—
COMPARE TRIALSChange one thingOptional experiment
EXPERIMENTChange one thingRun the machine. Save A. Change one thing. Run it again. Save B.
Start with Trial A.Turn the crank, then save what happened.
1 Pick a gear → 2 Make the teeth touch → 3 Turn the crank
WORKBENCH Ready to build
Put a gear on the board. Gears snap onto the holes. Gears that touch will glow.
PARTS
Build on your own
Tinker

Build anything you want

Pick a toy. Add gears, axles, pulleys, or belts. Turn the crank. Save what you build.

Second toy
Try a challengePick one, then build it.
Build anything you want.
EXPERIMENTChange one thingRun the machine. Save A. Change one thing. Run it again. Save B.
Start with Trial A.Turn the crank, then save what happened.
TINKER WORKBENCH Ready to build
Try something. Add gears. Make their teeth touch. Turn the crank.
PARTS
Saved on this device
Engineering notebook

Machine Notebook

Save what you built, what it did, and what you noticed. Open a machine later to keep testing it.

No machines saved yet

Build something in Tinker, then tap Save.

Machine Shop help

How to play

1

Build. Put parts on the board. They snap into good spots.

2

Turn. Drag the crank around with your finger or mouse. You can also tap Turn.

3

Change it. Move, swap, or take away parts. Try until it works.

Belt ideas

Open beltThe two pulleys turn the same way.
Crossed beltThe two pulleys turn different ways.
Small → bigThe big pulley turns more slowly.
Big → smallThe small pulley turns faster.

Belts can carry a turn across a big gap. The pulleys do not need to touch.

In build goals, each gear, pulley, belt, or axle counts as one part.

Use the Machine Meter

It counts turns and shows speed and direction. Tap Zero, turn the machine, and compare the crank with the toy.

Try an experiment: Run the machine and save Trial A. Change one thing. Run it again and save Trial B. The game compares what changed.

Gear ideas

↔ Other wayTouching gears turn different ways.
🐢 SlowerSmall gear → big gear makes the big gear slower.
🐇 FasterBig gear → small gear makes the small gear faster.
🔢 Teeth count12 teeth driving 36 teeth means 3 turns make 1 turn.
🧷 Same axleTwo gears on one axle turn together at the same speed.

Try the machine first. Use these ideas when you want help explaining what you saw.
Game settings

Settings