Printed yantras have no power

Printed yantras have no power and will not serve the purpose

A yantra should be created by the organic process mentioned here and only then a yantra is said to be energized and it will have prana (life). 
When yantra structures are held by mantras, the mystical power in them can be unfolded. In printed yantras, machine creates the yantra and not an Upasaka, without following specific rituals, not knowing the details of the beneficiary nor the intent (sankalpa). Without these processes, there is no power in yantras, and their value is limited to being geometrical structures.