LONDON -- In this video, Chris Nials and Sonia Rehill discuss three shares that are currently on Chris' watch list. He is pretty bullish on the future of 3-D printing, and as a result is keeping a close eye on 3D Systems (NYSE:DDD)Stratasys (NASDAQ:SSYS), and Renishaw (LSE:RSW).

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Chris Nials and Sonia Rehill have no positions in the stocks mentioned above. The Motley Fool owns shares of 3D Systems and Stratasys and has the following options: short JAN 2014 $55.00 calls on 3D Systems and short JAN 2014 $30.00 puts on 3D Systems. Motley Fool newsletter services recommend 3D Systems and Stratasys. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.