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DIY EEG (and ECG) Circuit
You might want to approximate the hoop stress in your chamber (sigma=P*d/2t), where P is pressure difference, d is mean diameter of the cylinder and t is the wall thickness. Compare this with the ultimate tensile strength of the material (looks like SS?). I'd aim for a FOS>=2.Keep us updated if your chamber implodes.
Building a Keg Still (Bokakob Design, Reflux Still)
3D Printing and CNCing Weird Freeform Lenses
Cross Bladed Axe
Nature Nanotechnology reports this DIY AFM (Atomic Force Microscope) / 自己動手做原子力顯微鏡 and DIY AFM controller get hacked
how to make a fireplace / BBQ out of steel
Giant 100mm LED
The Most Useless Machine EVER!
Make a good, cheap, upgradeable sheet plastic vacuum former
Cool Little Miniature Stove!
how to sew.
Laser Image Projector
How to wrap a Keffiyeh
Third Hand++: A multi-use helping hand for electronics and other delicate work.
[Collegiate Meals] How to Make Monkey Bread
Homemade (Waterproof) Fuse, For Homemade Fireworks
How to Weld - MIG Welding
How to escape
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