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![Make a manual vacuum pump for under $20 by converting a bicycle ...](https://www.iarticlesnet.com/pub/img/site/s_03.jpeg)
Make a manual vacuum pump for under $20 by converting a bicycle ...
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日期:2024-08-21
A vacuum pump is just an air pump that you use for sucking rather than blowing. You can convert an old-fashioned floor pump (bike pump) into a v......看更多