Extruder in place of British Hubles

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[>>>] Generating Attributions log:

[0] Thing Title : 3D-printable Thimble - (14, 16, 18 mm)
[0] Thing URL : http://www.thingiverse.com/thing:40143
[0] Thing Author : CreativeTools
[0] Thing Licence : Creative Commons - Attribution

[1] Thing Title : Cave Johnson Lithopane
[1] Thing URL : http://www.thingiverse.com/thing:76050
[1] Thing Author : Pink_Iguanas
[1] Thing Licence : Creative Commons - Attribution

[2] Thing Title