Canoe Sail

Instructables user TimAnderson writes: This 5 meter spritsail rig makes a canoe go really fast. It’s easy to build, easy to control, easy to put up and take down. It tolerated gusts well and can be tuned for really light winds also. I use an aluminum sign as a leeboard and steer with a paddle.

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Create a macro lens from an old 50mm

Lambert Smith has a great howto for converting a standard 50mm lens from an old SLR camera into a dedicated macro lens for your digital camera. By reversing the 50mm lens and using a number of extension tubes. The photo above is his conversion hack on a Canon Powershot G3, which has a non-interchangeable zoom […]

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