Hackaday [Unofficial]May 23

Water-cooling a 3D Printed Rocket Isn’t Quite Practical

https://fed.brid.gy/r/https://hackaday.com/2026/05/23/water-cooling-a-3d-printed-rocket-isnt-quite-practical/

Water-cooling A 3D Printed Rocket Isn’t Quite Practical

Consumer-grade 3D printers are useful for lots of things, but they kind of fall down when it comes to making stuff that survives high temperatures. [Mr. More Gooder] wasn’t deterred from a ro…

Hackaday
13May 23
Water-cooling a 3D Printed Rocket Isn’t Quite Practical https://hackaday.com/2026/05/23/water-cooling-a-3d-printed-rocket-isnt-quite-practical/
#EngineHacks #3dprinted #Rocket #Rocketengine
Water-cooling A 3D Printed Rocket Isn’t Quite Practical

Consumer-grade 3D printers are useful for lots of things, but they kind of fall down when it comes to making stuff that survives high temperatures. [Mr. More Gooder] wasn’t deterred from a ro…

Hackaday
13May 18
Small Engine Gets DIY EFI Upgrade https://hackaday.com/2026/05/18/small-engine-gets-diy-efi-upgrade/
#EngineHacks #Microcontrollers #Efi #Electronicfuelinjection #Engine #Fuelinjection #Harborfreight #Smallengine #Teensy #Teensy40
Small Engine Gets DIY EFI Upgrade

Small internal combustion engines usually keep things simple, relying on carburetors to handle metering the correct amount of fuel and air. Recently, [Carlos Takeshita] decided his small engine cou…

Hackaday
Hackaday [Unofficial]May 18

Small Engine Gets DIY EFI Upgrade

https://fed.brid.gy/r/https://hackaday.com/2026/05/18/small-engine-gets-diy-efi-upgrade/

Small Engine Gets DIY EFI Upgrade

Small internal combustion engines usually keep things simple, relying on carburetors to handle metering the correct amount of fuel and air. Recently, [Carlos Takeshita] decided his small engine cou…

Hackaday
Hackaday [Unofficial]May 9

Machining a Two-Stroke Engine out of Aluminium

https://fed.brid.gy/r/https://hackaday.com/2026/05/09/machining-a-two-stroke-engine-out-of-aluminium/

13May 9
Machining a Two-Stroke Engine out of Aluminium https://hackaday.com/2026/05/09/machining-a-two-stroke-engine-out-of-aluminium/
#EngineHacks #Internalcombustionengine #Machining #Twostroke
Machining A Two-Stroke Engine Out Of Aluminium

Recently [Camden Bowen] took a swing at machining a two-stroke engine out of billet aluminium, following adventures in 3D printing such an engine, as well as building one out of parts largely sourc…

Hackaday
Hackaday [Unofficial]Apr 25

You Wouldn’t Download a Combustion Engine

https://fed.brid.gy/r/https://hackaday.com/2026/04/25/you-wouldnt-download-a-combustion-engine/

13Apr 26
You Wouldn’t Download a Combustion Engine https://hackaday.com/2026/04/25/you-wouldnt-download-a-combustion-engine/
#EngineHacks #Cnc #HomemadeInternalCombustionEngine #Internalcombustionengine
You Wouldn’t Download A Combustion Engine

Although 3D printing it a great tool for making all sorts of things, the nature of the plastics used in most desktop FDM printers means it isn’t the first tool most would think of to build an…

Hackaday
13Apr 19
Building a Rim-Driven Jet Engine https://hackaday.com/2026/04/19/building-a-rim-driven-jet-engine/
#EngineHacks #3dprinted #Airbearing #Jetengine #Rimdriven
Building A Rim-Driven Jet Engine

Rim-driven thrusters turn the normal propeller-motor arrangement inside out; rather than mounting the motor at the center of the propeller, they use a large hollow motor, with the blades attached t…

Hackaday
Hackaday [Unofficial]Apr 19

Building a Rim-Driven Jet Engine

https://fed.brid.gy/r/https://hackaday.com/2026/04/19/building-a-rim-driven-jet-engine/

Building A Rim-Driven Jet Engine

Rim-driven thrusters turn the normal propeller-motor arrangement inside out; rather than mounting the motor at the center of the propeller, they use a large hollow motor, with the blades attached t…

Hackaday