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.
Step 1: Video
I created small video with these steps
Step 2: Coating Mass
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.
Step 3: Prepare Wires
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.
Step 4: Prepare Mold
Also you will need small piece of tin to create mold.
Step 5: See Results
This is semi finished, and finished resistor after drying.