Introduction: 3D-printed Strain Relief for Apple 60W Magsafe Power Supply

The original Magsafe power connector for the MacBook series is pretty slick. It offers a choice of wall plug or long cord and the quick-disconnect connector makes this an especially attractive item.

Until it breaks.

That unfortunately can happen if tripped over or yanked on too frequently. When it breaks, you need to pull the connector apart to solder wires back in place.

Step 1: An Old Problem

When the connections inside this magsafe connector went bad, the only solution was to pull it apart and fix it, which broke the cover. It could have been repaired with spit and chewing gum but, hey, there's a 3D printer in my office, and when the only tool you have is a printrbot, everything looks like an opportunity for stereolithography.

If you're looking to repair the connections, joecap5 offers help.

Step 2: A New Shell

After taking a few basic measurements, I created a series of prototypes in Sketchup Make, exported them in STL format and printed them on the printrbot in white ABS. Each prototype refined a measurement, tested an idea, confirmed a decision, and brought the design closer to its end.

Step 3: Anatomy of a New Part

Step 4: Installation, and Done!

The connector gets fitted into the open end of the shell, and the cable is wrapped round the inner post, then out through the corner. The mirror-image half is added, and a 3/8" #4 self-tapping screw holds the two halves together.

Comments

author
carlos66ba (author)2014-10-21

Excellent! I hope to never need your instructable but it is nice to know it is there.

author
seamster (author)2014-10-21

Very nicely done! This is a great fix. Thanks for sharing this, and for teaching me a new word: stereolithography.

About This Instructable

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Bio: I'm the Senior Design Demonstrator in the Faculty of Environment's unique Knowledge Integration program at the University of Waterloo.
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