Carbon composite second attempt

A project log for Better Homemade Resistors

Homemade resistors that are better than the pencil lead carbon and low-ohmic wirewound resistors people normally make.

SpockopolisSpockopolis 09/26/2014 at 22:040 Comments

To try to increase the strength of the resistors I replaced the clay with plaster. I mixed 5/8 of a teaspoon plaster of Paris with  1/8 of a teaspoon powdered graphite and 3/4 of a teaspoon water. I poured it into a narrow rectangular mould about 1/4 of an inch wide by 1 1/4 inches long and embedded leads. When I removed it from the mould in the morning there were two problems. Firstly it was actually likely weaker than the clay ones. Secondly and more importantly its resistance read infinite on my multimeter. Back to the drawing board I guess.