DIY Projects

Adhesive Giftwrap

Adhesive Giftwrap

So I catch the innertubes over to OhGizmo this morning and happen upon news of one of those forehead poundingly obvious products that someone should have brought to market decades earlier., Too wit: Self Adhesive Wrapping Paper Well, duh. Take wrapping paper, coat the back with Post-It strength contact adhesive, roll it up, and make […]

DIY Induction heating

DIY Induction heating

Once you have made your ignition coil, you may want to try making an induction heater. Here is how they work: When an alternating electric current is passed through a coil, the coil creates a magnetic field. The magnetic lines of flux cut through the air around the coil. If a ferrous material, such a […]

Fun with ignition coils

Fun with ignition coils

Ignition coils are a cheap way to have some high voltage fun. You can usually find them in old cars or a used parts shop. They need a special circuit to work outside of the car; fortunately it’s fairly easy to make one. Ignition coils are essentially pulse transformers. Transformers that work using pulses of […]

DIY Digital balance

DIY Digital balance

Here is a fairly easy way to make a digital balance. It is able to measure amounts less than 1 milligram. A balance with this resolution is still be fairly expensive, so building one may be a great solution for those budding chemists with a limited budget. Digital balance