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Discuss your DIY project free with expert professionals. Do it yourself (DIY) is the process of building, modifying, or repairing things without the direct aid of professionals.
Misc. Help with power wheelchair modifications
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How to make a small model airplane take off (not working yet)
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Home project: Kilogram Force on wheel bearings
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Building a small hot air balloon
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How Can Eddy Current Drag Be Minimized in AC Generators?
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Construction How do you build a self-submersible boat?
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Misc. Are there alternatives to a Stewart platform that have more lateral motion?
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Audio/Video Fluid Dynamics—Building a better MIDI Breath Controller
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Auto/Motor Get a 1945 Harley running again
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Electrical Calibrating a metal leaf or pith ball electroscope
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Audio/Video Please help, require schematic diagram of power amplifier ROYAL L1200
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Plumbing How Can Airflow be Distributed Evenly in a Small Ducting System for 3D Printing?
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Misc. Problem with my cloud chamber -- have a mist but no tracks
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Construction Column load bearing calculations
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Plumbing Question about Pressure Reducing Valves
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Construction How to cut a board so that it can be bent spherically?
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Tipping force and Center of gravity for wall fitted furniture
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Plumbing Finding a leak in a Central Heating system (water)
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Computer DIY Chip Making at a Whole New Level
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Auto/Motor A DIY Wooden EV Rolls Royce for Kids
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Lawn/Garden Home project help please - max wind speed to tip over object
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Appliances Reducing output of log burning stove
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Best indoor positioning system/technology for in-home use?
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Appliances Removing a Stuck Rusted Screw: Easy Out or Drill?
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Would You Call Pro Help for Flooded Toilet if You Caught Immediately?
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What Could Be Causing the Error Message on My Tempo Fitness Treadmill?
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Optical Where to look for a UV light that is invisible to the naked eye?
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Misc. How to avoid tools getting stuck in MT3 Morse Tapers?
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Misc. What emissivity should I use for LED strips?
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Lawn/Garden How can I optimize my DIY humidifier to improve its longevity and efficiency?
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Misc. In desperate need for a DIY experiment that I can do at home
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Electrical Emergency Battery Backup System for TV/Internet During Power Outages
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Electronics Remote Control Magnet Force: Possible?
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Audio/Video Anything that can be done for this ailing Onkyo Tuner?
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Audio/Video How Can I Create a Touch Sensitive Volume Knob for My Audio Card?
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Chemical/Paint Algae Carbon Capture: Make Your Own Algae Tank & Absorb CO2
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Plumbing Water Softener Troubleshooting/Repair
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Electronics NPN transistor is always flickering and on
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Trying to Wire a Washing Machine Motor To Power a Grain Mill
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Misc. Display built with a rotating cube design
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Make our own permanent conductive ink
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Misc. Is a One-Piece Injection-Molded Plastic Lock Possible?
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Electrical How to estimate friction on the bearings to select motor?
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Electronics Upgrading Capacitor-Based Fan Regulators for 500-1000 Watts
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HVAC Redirecting Airflow with a Curved Surface
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Plumbing Heron's Fountain as a Shower - Seeking advice on the Physics
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Optical Ideas for Infinity Mirror Geometries
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Material selection calculations for DIY traction bars for my truck
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Misc. Where Can Train Hobbyists Find N-Scale Shingles Today?
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Electronics Will this electronic circuit work? (back-to-back polar capacitors)
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Electrical TV capacitor instead of motor capacitor
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Electrical A speed limiter for a Universal Motor in an old Lionel Train
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Misc. AP Seminar Student Looking For A Topic
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Optical Spectrometer centered wavelengths
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Misc. How do I change a really high light bulb?
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HVAC Attic to Pool Heat Exchange, will car radiator collect heat?
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Misc. How can I enlarge the light produced by a laser?
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Electrical USA Building Codes: Inside Junction Boxes with Terminals?
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Pulley system for cardboard pulp shredder/mixer
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Misc. I want to mechanically detect when an egg-timer runs out - ideas?
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Auto/Motor What's Causing My Kia Stinger's Battery to Drain?
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Electrical Fleming's "right hand rule" is not working for me. Why?
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Electrical PIR sensor lags in taking pictures
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Electrical Rav4 power window motor -- 2pin plug to 5pin plug
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Electrical Information on how to build a sounding rocket
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Appliances Microwave Oven - Magnetron End Cap Replacement
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Electronics Switches, Pots, Displays for DIY projects - Some ideas, some questions
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Misc. Designing a Model Aircraft: Calculating Thrust and Lift for an Efficient Flight
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Construction Aluminum Cantilever for Truck Camper
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Construction Gas Strut - ideal mounting position & Force Calculation
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Auto/Motor How can cogging torque be reduced in permanent magnet synchronous motors?
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Optical DIY Privacy Shades: Make Your Own IR-Blocking Sunglasses
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Chemical/Paint Removal of broken glass from solar panel
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Converting a Lawn Tractor to Electric Power
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Electrical Screw heads: Phillips/Slotted vs ECX
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Computer Build a portable (laptop-like) computer?
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Electrical AC Brush Motor: 12 Slots, 24 Copper Bars, 48 Ends
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Electrical How Can You Efficiently Solder Wires to LED Chips?
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Construction How Can I Build a Homemade Particle Accelerator?
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Electronics Radioctivity: radiation detector with an LED
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Questions about DC motor drive calculations
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Electrical Daisy-chained, parallel or series? (failed outlets in home)
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What to fill a glass bottle with (a liquid that hardens) to lower its volume?
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Replicating vulcanised rubber bands?
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Electrical Raspberry Pi Zero W receiver / transmitter
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Misc. Pneumatic cylinder selection - Help calculating the force needed
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Optical Compact Device For Measuring Speed of Light
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Misc. What's needed to get liquid helium to climb up a beaker? Thanks
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Electrical Build or Buy a Van de Graaff generator?
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Electrical How to use capacitors in a Solenoid circuit
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Electrical 420-450MHz, High-Low state detection (without interference).
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Electronics Designing a buck converter with feedback and a regulated output
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Electrical How do I.... Change a lightbulb?
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Misc. MIT Think Competition Project — Farming Robot
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Optical Converting non-visible light to visible spectrum for photography
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Construction My Storm Shelter: Summer Project w/ Dog Kennels & Lights
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Making a robot to help around my farm
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Optical Simple homemade Raman spectrometer / microscope
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Chemical/Paint Shop for Black Anodized Wire | 1-0.075mm Dia.
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Electrical Converting Old Filament Car Lamps to LED: Considerations for Focusing Light
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