How to make CONDUCTIVE INK easy

This is my weekend project: How to make conductive ink.

My conductive ink have 15 - 20 ohms/cm but you can improve if you add more conductive material like graphite or graphene powder. This conductive ink is also good for making some homemade portable heater or something similar.

BUT the ink is not flexible at all!!!

What you need:
- Acetone - 20 ml (but you add more if it's the ink too thick)
- Cigaret filters - 6 filters
- Graphite - 2 to 3 g (but add more to improve the conductivity)

Sorry but I forgot to measure the amounts and the quantities is not 100% sure!!!

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