DIY Power Resistor

by kobyx in Circuits > Electronics

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DIY Power Resistor

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First , hello , I am glad to be here on instructables.com

This is my first instructable.

This is one simple way to create power resistor at home.
I needed 0,33 ohm resistor with some larger wattage so I decide to create one, instead of buying one. I always say, creating is much more fun then buying.

Video

Power resistor DIY

I created small video with these steps

Coating Mass

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You will need jointing filler to create mass for coating, to protect resistor wire from oxidation, and to provide heat transfer from wire to environment.

Prepare Wires

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You need one old high wattage resistor ( I had one 10W 100 ohm ) to use wire from it.
You will have to destroy it, and take high resisting wire of desired length-resistance. You also need some copper wire as connectors.

Prepare Mold

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Also you will need small piece of tin to create mold.

See Results

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This is semi finished, and finished resistor after drying.