Ultimaker Quick Connect Shim
by LawrenceJohnston, published
When doing retraction with the Ultimaker the quick connect on the extruder allows quite a bit of play.
This shim fits on the quick connect and essentially eliminates this play.
See posts such as this one: https://groups.google.com/d/msg/ultimaker/fNgHD9W6bkI/D5F2PjhWSI8J
This thing was created using the Object Oriented Mechanics Library (OOML). See http://iearobotics.com/oomlwiki/doku.php?id=start for details.
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Print shim. Pull the bowden tube up from the extruder until a space is formed between the pieces of the quick connect. Insert the clip around the inner piece of the quick connect (see picture). This prevents it from pulling back down into the outer piece during retraction.
If you later want to remove the bowden from the quick connect you must first remove the shim.