Abstract: Carbon thin films were deposited on Aluminum (Al) and Copper (Cu) substrates by electrolysis of methanol. The effect of camphor (C10 H16O) a natural source, incorporation with methanol is investigated. Camphor with varying amount (1, 2, 3, 4, 5, 7 and 15%) was mixed in methanol solvent to prepare the electrolytes. Aluminum and copper substrates were mounted on the negative electrode. Remarkable change in the variation of current density as a function of applied potential was observed with camphor content. Thin films were deposited on Al and Cu substrates for different percentage of camphor and are compared. Current density is observed to vary with substrate. For both Al and Cu substrates current density was highest for the 2% camphor in methanol solution. The maximum current density with camphor content was different for Al and Cu substrates.