3d printing is becoming more widely used now, and I wanted to show a tip that i have picked up along the way while 3d printing. Printing in different colors is fun, but it takes a lot of time to switch the colors in and out and multi-color spool is expensive. This instructable shows how to "rainbow ...By: enelson8
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from Instructables: exploring http://ift.tt/144E0dU
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