This project makes use of the intricate geometries and flexible behaviours that are possible with 3d-printed polyamide - holding 111 five-eurocent coins firmly in place to create a stunning necklace. E 5.55 is currently available as a DIY project. Start saving coins now - it’s half the fun. Alternatively, many banks can provide you with those rolls of 5 eurocent coins that you need, at a small cost. A fully assembled version of E 5.55 will be available from michielcornelissen.com soon. Mail me at michiel(at)michielcornelissen(dot(com for wholesale possibilities. Copper can oxidize and become darker over time - which can actually give a great look. If you prefer lighter, shinier coins, there’s an easy - and fun! - way to clean them. Snap the coins out of the necklace, and submerge them in vinegar (you can add table salt, too) for a few minutes. Stir well, to make sure plenty of vinegar gets everywhere. Rinse the coins in hot water, and dry them. It’s magic. The necklace itself can be cleaned with water and soap and even dish-washed, after removing the coins. Each product ordered is individually manufactured, just for you. If you are new to the Shapeways site: to order, you'll be asked to create an account (it's easy; you can even log in with Facebook or Twitter). Product ships in basic Shapeways packaging. For more information about my work, visit www.michielcornelissen.com; if you have any feedback or questions on this item, please feel free to contact me directly at michiel(at)michielcornelissen(dot)com. If you like, follow me on twitter @michiel_ontwerp.

Tool, symbol or both?

The bits on this pendant are based on actual bit sizes - including an IKEA standard tool - so 'a bit cross' can be used for light jobs. Just remember the steel isn't tempered like 'real' tool bits and tolerances may vary.

I recommend using it with a red leather cord of about 78 cm/ 31 inch.

If you are new to the Shapeways website: to order you will be asked to create an account (it's easy).

Happy Bird jewelry is now being sold in many design stores around the world, including the New York MoMA (Museum of Modern Art).

Products from the Happy Bird series are available in M and XL sized necklaces, and as earrings; in white, black and limited edition colors. The jewelry is sold complete with beautiful black ball-chain necklaces, nickel free earring hooks and a luxury gift box.

Happy Bird jewelry is currently not available directly through Shapeways, but you can still get one! To locate the nearest store for you, to order one or to enquire about wholesale possibilities, please send an e-mail to info@soonsalon.com.