Copper Bhoum Yantra for South, South West Main Door Entrance Vastu Defect RemediesBuy Copper Bhoum Yantra for South, South West Main Door Entrance Vastu Defect Remedies Online Rudraksha Mart The Copper Bhoum Yantra for South, South West Main Door Entrance Vastu Defect Remedies is a precisely engraved sacred geometric instrument used in Vedic worship and meditation. Crafted from Copper using traditional tools, every line and intersection of this yantra is etched to exact proportions as prescribed in authentic Tantric scriptures.