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2n3055 Flyback Transformer Driver for Beginners
Basic Silver Soldering With Strong Joints
So looking at the datasheet, yes it's bad if you inhale and very bad if you ingest (get immediate medical attention, don't vomit). There are a few mentions about skin contact: "Avoid prolonged contact with skin.", "Skin contact may cause drying of the skin." "Wash with soap and water. If irritation develops and persists, get medical attention", and advice to wear gloves. So its not showing dire consequences.
Fidget Spinner to Brushless Motor
Build a Power Bank in $2
Small Wimshurst Generator From Cardboard and CDs
Build a Lab Quality (ish) Distillation Apparatus.
How to Make a Still
Simplest Geiger Counter
Imprint invisible sound and radio waves onto your retina: Augmented reality with perfect alignment
$5 Static Electricity Generator
Make a small, but powerful 30KV Van De Graaff generator
The New and Improved Tin Can Microphone
433 MHz tape measure antenna -suits UHF transmitter tracking!
VHF-UHF RF Sniffer
Uses of Different Soldering Iron Tips
Master a perfect inline wire splice everytime
How to make a cheap Attiny Arduino Board
Accelerometer Shield for Physics Class and beyond
Girino - Fast Arduino Oscilloscope