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Venturi Vacuum Degassing Apparatus for use in Rapid Biomedical Part Prototyping
How to create earrings using blown electric fuse
Have you tried maybe finding a wooden dowel that fits the end cap? If you insert that and then tap a nail into it, that might be able to make the hole without crumpling the etal casing! Either that, or drilling a 1/16" bit into the dowel through the cap.Great instructable, I can't wait to try it!
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