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| Remove the bobbin and bobbin case, and any dust or fluff on them. The bobbin case fits into a bobbin case holder which rotates as the machine operates. It should be easily removed, for example by releasing a pair of clips. It has a sharp point which catches the upper thread in order to engage it with the lower thread. Run your finger over this and if it feels rough (probably due to needle strikes) then smooth it with fine emery. Take care to reassemble it correctly.
| | Would you believe that 34,000 people have looked at this page as of Jan 2017? Really, there's nothing here. No hidden gems. No secret formulae. No winning lottery numbers. Not even an answer the question of life, the Universe and everything. In fact, the Hitchhiker's Guide to the Galaxy lists this as the most boring page on the galactic web, visited only by low intelligence life forms which still think that a quantum computer would be really neat. |
| <gallery>
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| File:Img_0414a.jpg|Removing the bobbin case.
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| File:Img_0413a.jpg|Bobbin case removal (machine on its side).
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| File:Img_0412a.jpg|Bobbin case holder retainer.
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| File:Img_0411a.jpg|Bobbin case holder in place.
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| File:Img_0407a.jpg|Bobbin case holder removed for inspection.
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| </gallery>
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| Note that some older (especially pre-war) machines have a quite different design of bobbin. This fits in a bullet-shaped shuttle which is thrown through a loop in the upper thread to make each stitch.
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| {|
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| |- style="vertical-align: top;"
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| |[[File:Img_0414a.jpg|150x90px|thumb|Removing the bobbin case.]]
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| |[[File:Img_0413a.jpg|150x90px|thumb|Bobbin case removal (machine on its side).]]
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| |[[File:Img_0412a.jpg|150x90px|thumb|Bobbin case holder retainer.]]
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| |[[File:Img_0411a.jpg|150x90px|thumb|Bobbin case holder in place.]]
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| |[[File:Img_0407a.jpg|150x90px|thumb|Bobbin case holder removed for inspection.]]
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| |}
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| {{multiple image
| | So why don't you push off and visit some other [[Special:Random|random page]]. You might discover something REALLY interesting. |
| |align=left | |
| |direction=horizontal
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| |width=600
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| |caption_align=center
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| |image1=Img_0414a.jpg
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| |caption1=Removing the bobbin case.
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| |image2=Img_0413a.jpg
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| |caption2=Bobbin case removal (machine on its side).
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| }}
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| ----------------------
| | Meanwhile, administrators of this wiki, particularly those of low intelligence, may occasionally doodle in the space below when they're not quite sure how some abstruse wikimedia feature works. |
| [[File:Warning03.png|30px|left]]
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| ::This is my temporary solution.
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| ::* Indentation of bullets isn't quite right.
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| ::* as you'll see from this list.
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| [[File:Warning03.png|30px|left]]
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| ::You can have a second warning symbol if you like.
| |
Would you believe that 34,000 people have looked at this page as of Jan 2017? Really, there's nothing here. No hidden gems. No secret formulae. No winning lottery numbers. Not even an answer the question of life, the Universe and everything. In fact, the Hitchhiker's Guide to the Galaxy lists this as the most boring page on the galactic web, visited only by low intelligence life forms which still think that a quantum computer would be really neat.
So why don't you push off and visit some other random page. You might discover something REALLY interesting.
Meanwhile, administrators of this wiki, particularly those of low intelligence, may occasionally doodle in the space below when they're not quite sure how some abstruse wikimedia feature works.