Screw head illustrations from screw types around the world: wood, performance, self-drill/pierce, roofing, construction, concrete, decking, drywall, cladding, flooring, PVCu window/door, furniture, and special screws. From my new ibook called SCREWS 1190113849 $3.
Image 4 of 33 from gallery of Energy Efficient Bamboo House / Studio Cardenas Conscious Design. Photograph by LIB – Longquan International Bamboo Commune
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