carl Johnson

carl Johnson

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carl Johnson
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Fathers Day-3D Tool Box Card

If you're looking for free printable Father's Day cards, you've found the perfect tutorial! Make the Tool Box Father's Day Card. This awesome homemade Father's Day card is a marvelous paper craft idea to celebrate dad.

figure ground

The figure and ground is presented by this picture. People can understand the meaning of the picture. it warns people that we need stop using guns. Guns are pretty harmful to people security.

And there it is: The end result of the Magic Mirror. Read the full story: Part I - The Idea & The Mirror Part II - The Monitor Part III - The Casing Part IV - Install The Hardware Part V - Installing the Raspberry Pi Part VI - Production of the Interface

3D-Printed ‘Bump Key’ Can Open Almost Any Lock

Bump keys are primitive tools used by locksmiths (and HAXoRZ) to knock open simple locks. Until now, many locks were secure simply because they were too.