Printable booklet packs

Every build in a series as a ready-to-print PDF instruction booklet, all in one download. Great for printing a binder, building offline or running a class. Parts not included. Single booklets stay free on each build page.

Try a free build and preview its PDF booklet

Secure Stripe checkout. Download by email: open within 7 days, then start a 24-hour download window. Save your PDFs to keep them.

Starter Builds booklet pack: $3.99

All 15 first builds: rolling cars, gears, a pull-back racer and first motors. 22 booklets.

• Tiny Roller
• Gear Friends
• Speed-Cancelling Gear Bridge
• Compound Counting Bench
• Rack Travel Bench
• Coasting Wheel Bench
• Dual Output Gear Bench
• Rim Distance Bench
• Crank Orbit Bench
• Push Buggy
• Pull-back Racer
• Gear Speed Lab
• Steering Go-Kart
• Worm-Gear Crane
• Bevel-Gear Windmill
• Motor Buggy
• Spinning Radar
• XL Power Crane
• Bouncy Monster Truck
• RC Tank
• Floor Express
• RC Racer

Gearbox & Drivetrain Cars booklet pack: $5.99

30 cars with gearboxes, differentials, steering and 4WD. 30 booklets.

• Propeller Push Car
• Odometer Cart
• Idler Parade Car
• Driveshaft 4×4 Pusher
• Crank Cruiser
• Sliding-Gear 2-Speed Cart
• Differential Demo Cart
• Ackermann Soapbox
• Pull-back Trike
• Big-Wheel Dragster
• Gear-Up Speeder
• Pull-back Tortoise
• Two-Speed Pull-back
• Launch-Lock Racer
• Twin-Spring 4×4
• Pull-back Diff Racer
• Belt-Drive Buggy
• Clutch-Gear 2-Speed Car
• Reverse-Gear Truck
• One Motor, Knob Steering
• Reverse-to-Turn Car
• First RC Car (Servo)
• Front-Drive Servo Trike
• Three-Speed Car
• Skid-Steer Loader
• Worm-Drive Crawler
• Diff-Lock Mud Truck
• Independent Rally Car
• AWD with Central Diff
• Twin-Motor Dozer

Mechanical Wonders booklet pack: $5.99

30 machines: linkages, cams, cranks, clocks and walkers. 30 booklets.

• Pendulum Metronome
• Balance See-Saw
• Ripcord Top Launcher
• Lazy-Tongs Grabber
• Egg Beater
• Flywheel Friction Car
• Spring Catapult
• Castle Drawbridge
• Woodpecker Automaton
• Chair-Swing Carousel
• Parking Barrier Gate
• Ratchet Car Jack
• Twin-Piston Engine
• Geneva Step Counter
• Oscillating Fan
• Nodding-Donkey Pump Jack
• Scissor Lift
• Ferris Wheel
• Cam Drummer
• Spirograph Drawing Machine
• Conveyor Belt
• Counterweight Trebuchet
• Cog Railway Climber
• Sun-Earth-Moon Orrery
• Spring Escapement Clock
• Klann Walking Spider
• Crank Excavator Arm
• Robot Arm with Servo Claw
• Sun-and-Planet Beam Engine
• South-Pointing Chariot

Complete MightyCog booklet collection: $12.99

Every build in all three series, 75 printable booklets. 82 booklets. Saves $2.98 compared with buying the three packs.

Questions about booklet packs

Are building parts included?

No. The packs are printable PDF instructions only. They work with Technic-style beams, pins, axles, gears and motors, and every booklet lists the parts it needs.

What is in each booklet?

A cover, the story and the ideas it teaches, a parts list, big step pictures with the new parts outlined, engineering tips, and a “You built it!” finish page. Pages are A4 landscape; choose “fit to page” to print on US Letter.

Can I try one first?

Yes. Every single booklet is free on its build page: open any build and press Download PDF booklet. A pack gives you the whole series in one download.

How do I get my files?

After checkout we email a private download page. The booklets are made in your browser and saved as a ZIP of PDFs, ready to print or keep on a tablet.