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[Cadeamon]

RC drones or other hobby crafts

[gial]

All bicycle parts (frame, wheels, steering, brakes, etc) from carbon fiber would be nice

[infrafox]

I would like to make really strong parts that would last.

[Tqx]

I would use the carbon fiber for quadcoptors and plane parts.

[LucidMovement]

Artistic projects. The metal filaments could have some very interesting surface appearances depending on how it performs. I'd love to see a copper, brass or bronze filled filament.

[Blackshadow]

http://www.proto-pasta.com/shop/magnetic-iron-pla has potential to be used for magnetic sensing and speakers.

[AnewDreamLife]

The Magnetic iron could easily be printed into assemble-able Maglev tracks - they could be used to create levitation tracks like maglev trains, but smaller, say, for camera-paths or the movement of materials with low energy costs. For example, a magnetic spiral tracks could be assembled in pieces that wrap around someone in a spiral formation, which could allow a floating camera to spiral around you taking a perfect 3D scan, or 3D photography capture-collection.

[jehimes]

Would like to try the high temp PLA. PLA prints so much easier than ABS, but leave it in your car . . .

[Zhall]

I am looking forward to printing levitating doodads from magnetic PLA.

[atoff]

Many practical things that can be printed using PC-ABS. I suppose I'd use it where heat might be an issue with other filaments. Like for in car brackets or phone / gps / ipad mounts.