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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What a DAY!

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MẪU THUYỀN CHO NGƯỜI ĐAM MÊ TỐC ĐỘ - CAP CAMERAT 10.5 WA #shorts Quý vị có nhu cầu thuê du thuyền để trải nghiệm hay cần tư vấn chọn mua du thuyền, vui lòng liên hệ: Hoàng Đức - Giám đốc Truyền thông Vietyacht ▶ Hotline: 0976 377 337 (SMS, Zalo, Viber) ▶ Email: hoangduc@vietyacht.vn ▶ Website: https://vietyacht.vn/ | https://luxyacht.vn/ ▶ Mời quý vị yêu thích du thuyền cùng tham gia group Yachts Passion: https://www.facebook.com/groups/229867694881650/ #duthuyen #review

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Longer version at katamarans.com/bowline-on-a-bight/ 🔸 The Bowline on the Bight is a double-loop variation of the bowline. Tie it in the centre of a line when you need a loop and you can't easily get to either end. 🔸 It makes a good hoist if you have to lower or raise someone, with one loop the seat and the other under the armpits and around the chest. The loops should not slip and it shouldn't jam after strain. 🔸 With a doubled up rope, make a small overhand loop as you would in a Bowline. Thread the end of the bight up through the loop. 🔸 Open the end of the doubled rope and bring it down and around as shown and tighten. 🔸 🔸 🔸 #sailing #multihulls #catamarans #knots #ropes #learnknots #learntosail #katschool #knot #rope #lovesailing #sailinglife #katamarans #bowlineonthebight

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