How to use friction welding to repair and make 3d printed objects

Here are two video guides by youtube user Scorch on using a Dremel based DIY friction welder. Great work Scorch!

Here is a video on how to make a Buckyball from 3d printed hexagons:



... and video on how to repair 3d printed objects:




Friction welding works with both PLA and ABS.

While good people of Hackaday think this is a new 3d printing technique it is actually used for a quite some time now.

here you can see it in action making and repairing stuff:

http://diy3dprinting.blogspot.com/2014/01/how-to-friction-weld-plastic-with.html

... and here you can see a guide on how to make it work and make a small DIY plastic welder:

http://diy3dprinting.blogspot.com/2013/01/diy-friction-plastic-welder-by-fran.html

And if you want to use 3d printed plastic rivets for friction riveting things together:

http://diy3dprinting.blogspot.com/2014/01/3d-printed-rivets-for-friction-welding.html

If you want to go the ultrasonic way or DIY heat plastic welding in the "old school style":

http://diy3dprinting.blogspot.com/2012/12/diy-ultrasonic-plastic-welding.html

And here is how a friction welding seam looks like (from Scorch's video):

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