The THz gap has attracted considerable interest in the last decade in a wide range of applications (from astronomy to biology) due to the low energy of the THz waves and their capability to provide chemical recognition and non-destructive inspection. To implement THz- based solutions, a wide range of components have been developed and efforts are being done to reduce the system cost through the use of cost effective materials. This presentation analyzes the development of metal wire grids by using the conductive properties of graphite. The aim is drawing the wire grid using a simple graphite lead pencil on standard paper. This would reduce the cost of several wire grid base components, such as polarizers or filters. An 8B pencil is used because of its high graphite contents. Parameters such as the pitch of the structure and its fill factor are set to study the behavior of the metal grid in a frequency range from 0.1 to 0.7 THz. An average pitch of 800 micrometers with a fill factor of 0.8 corresponds to an ER of 2 dB. The samples are analyzed using a fiber-based pulsed THz Time Domain Spectrometer in transmission mode. An ultrafast laser pulse impinges on a photoconductive antenna generating the THz beam that is detected by a similar switch. Preliminary experimental results show that the increase of the angle between the horizontally-polarized incoming electric field and the graphite periodic structure corresponds to a decrease of the THz absorption, hinting at a polarizer behavior.