I can't really think of a reason why the piston returns to the original position!! any ideas?? I made a transparent QEV coaxial cannon out of the preform of a bottle. This was inspired by a Nighthawkinlight's project, although I added a transparent barrel and had to make everything work with a wooden piston and o-ring seal. The breech seal is just a piece of rubber from the inner tube of a bike tire. Thanks for watching!

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There’s something different about being out on the water in Hawaii. No crowds. No shared itinerary. Just your people and the ocean.⛵️ When you book a Private Catamaran Charter in Honolulu, Hawaii the day moves at your pace. Want to sail? Jump in the water? Snorkel with Hawaiian Green Sea Turtles? Slow it down and just watch for dolphins and turtles? We build the schedule around your preferences. Aboard Sail Hawaiian Style Catamaran, every trip is custom, whether it’s family time, a celebration, or a mellow day on the water. From sailing along Waikiki to swimming and snorkeling, no two days ever look the same. This is your time, your group, your version of Hawaiʻi experienced the way it’s meant to be: unhurried, personal, and on the ocean.⛵️ As the holidays approach, it’s a good reminder to slow things down and spend time where it actually feels like a break. If that looks like a day on the ocean with your favorite people, you’ve come to the right place! Holiday dates are filling up 🗓️🌺🎄 SailHawaiianStyle.com #oahuhawaii #gohawaii #hawaiithingstodo #sailing #catamaran #underwaterworld #snorkeling #catamarantours #familyfriendlytravel #explorehawaii

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A shark sneaks up behind me while reporting an anchor check, so I follow her around the anchorage. It's REALLY hard to keep up to this casually cruising shark Check out the full video at https://youtu.be/i77ugZrL2R4

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Il MOD 70 di Oman durante la City Race di Genova che ha concluso il MOD 70 European Tour tra agosto-ottobre 2012

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