Tinkercad Robotics for School: Evil Zipline Robot!
Low Cost DIY CNC Router
The Secret to a Perfect Hot Glue Mold
Design & Build a Truncated Icosidodecahedron!
The weight of a winding depends on the layer it is on. Early layers have a smaller circumference so they weight less per turn.
Try something like this to move sore real air! https://hobbyking.com/en_us/alloy-dps-64mm-10-blade-electric-ducted-fan-assembley-3300kv.html?queryID=4cc9222d99b13a245de3df8595ca1c87&objectID=54548&indexName=hbk_live_magento_en_us_products
Air Umbrella 2.0 DIY! a Second Wind!
Cycloidal Disk Electro Mechanical Timer.
How to Cut Circles - 4 Methods
Magnet Powered Submarine
Dorodango - the Art of Polishing Dirt!
Clock'r Walk'r: the Clock Powered Theo Jansen Strandbeest
If your scrap hardwood includes some with terribly warped grain that makes it hard to use for straight things, this is a great opportunity to add some aesthetic character by making the end pieces bent to follow the grain.
Itsy Bitsy: an Untethered Climbing Robot
SLA 3D Printer Acid Etched Circuit Boards
Build a Martian Electronic Eye
Ultimate CNC Router Enclosure
Halloween Candy Slide
Panino Alla Parmigiana - an Italian Delicious Recipe
The Different Useless Machine
Jet Propelled Radio Controlled Duck
Android Smartphone As USB (!!) Webcam
CNC Machined Airplane Propeller
Moai From Recycled Foam
GorillaBot the 3D Printed Arduino Autonomous Sprint Quadruped Robot
I made a larger fin version that passes the swing test. https://www.dropbox.com/s/royivikm0y9wk8h/4%20long%20curved%20fins.stl?dl=0
The rocket looks nice, but a quick swing test (https://www.youtube.com/watch?v=AhS5fT_EE6M) shows that it will fly sideways as well as forwards. It needs larger fins, more like a V2.
3D Printed CO2 Canister Rockets and Launchpad
Wind-Up Paper ButterFLY
Hits Your Eye Like a Big Pizza Pie
Maple Seed Mini Glider
Juuke - a RFID Music Player for Elderly and Kids
ZENCUBE: SPACE/NOT SPACE
Interactive Subway Info Display With Voice Instructions. Demo
Assassin's Creed Valhalla Eivor Axe 02
Automated Perpetual Calendar
If your DIY skills prefer this can be made from 1/2" steel electrical conduit too. I made legs out of scrap plywood instead of pipe fittings. The alternatives are endless.
DIY Paper Stomp Rockets
A Tiny Compass With ATtiny85
Replacing Antique Hardware With Epoxy
3D Printed Omni-Drectional Wheel / Fidget Toy
Solar Powered Compost Drum System
I can imagine this idea being used to make neon sign like logos or initials. 3D printing the tube already bent is a great idea!
Giant CFL Light
DEC H-500 Computer Lab Reproduction
Clockception - How to Build a Clock Made From Clocks!
Wooden Threads With Your Router Table
Make It So! Star Trek TNG Mini Engineering Computer
Solder Electronic Components on Aluminum
See-Through Arduino UNO
Gravity-defying Silly Slime Hat
Gandalf the Grey's Wizard Hat
DIY Bleach Space Shirt
World's Simplest and Newest Trebuchet (Walking Arm Trebuchet)
Upgrade Your CNC
Freeform LED Sphere
Wood and Steel Shelving Unit
STEGObot: Stegosaurus Robot
Simple Tensegrity Ornament
Ch, Ch, Ch, Chia Ugly Christmas Sweater
Meta Making Tips (& Some Quite Unusual Shelves)
How to Make Easy Box Joints - Finger Joints
ISS Tracking Lamp
Vacuum Cannon Drives Ping Pong Ball at Supersonic Speed
Personal Assistant Robot (Finds Objects and Follows You) Ft. Raspberry Pi + RoboClaw