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    Filament Choice

    The question is: in what conditions will it be used? Low stress -> PETG, ABS, even PLA, etc. High stress and seawater -> engineering materials like Polycarbonate? The latter is very hard to print, but is one of the toughest materials to use. Many car parts are made of PC. There are lots of...
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    Apart from a JJ CCR, what else do I need to order?

    I do with 1,6 kg's with winter undersuit (BZ400). With summer undersuit alu of carbon plate and no weight and it's still heavy.
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    What would you do if you saw someone diving a tank marked "For paintball use only"?

    I probably would chat with them about their training en experience. Diving with a tank labled 'paintbaal' is not a 'no go' perse imo. A tank is just a tank, the content and safety (valve, breathing gas clean, etc.) of the tank is what counts.
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    Is certification necessary for shallow water diving?

    In fact they die also after training and sometimes even during training. Training and certification in itself mean nothing. The most important aspect of training is understanding and mitigation of risks if you ask me. The card is just to get fills.
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    Apart from a JJ CCR, what else do I need to order?

    Don buy anything until you have actually seen and been diving the unit for a while. Comes with Petrel 3 computer. What I added after some 50 hours of diving and knowing what I wanted to change: - BOV Divesoft - Shearwater Nerd - O2 and dil transmitter - Extra 3 l tanks O2 and dil - Drysuit...
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    Is certification necessary for shallow water diving?

    What you're actually saying imo is: the training is not worth the money because the instructor does'nt do his job right. I would agree with that. The majority of dive instructors should do a better job. It's hard to find a really good instructor not knowing anything about diving.
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    Bcd filled with water

    Seems you're very new to diving. Possibly you are overweighted and need to compensate with your BCD. I would say it's not uncommon to have a lot of water in your BCD considering your experience. My advice would be to try and shave of some weight gradually as your experience grows. You will...
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    Mod 3 readiness

    I'am thought those skills in my MOD 2 class 2 years ago. It could be dependant on the instructor though. My instructor has been tech diving for more than 30 years with several types of rebreathers and did multi 100 meter plus dives. Anyhow, I'am glad I have learned those skills. I experienced...
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    Question Is AOW a waste of time?

    My advice to your friend: get a high paying job, get self employed and rich or marry a rich wife. Otherwise, go freediving, forget about Tech diving :crafty: It takes a ton of courses, hundreds of dives and quite some dedicated dive vacations before even thinking about going CCR. CCR alone will...
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    Question Tech diving in Red Sea North?

    For rec diving you can get away with that. For long tech dives? I would not recommend a wetsuit, but a dry suit any time. Maybe in the Philipines or somewhere like that you can get away with a wetsuit during long dives, not the Red Sea in my experience.
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    Question Too early to consider tec?

    Agree. I had a complete mind shift about certification when I started my tech journey. I was very proud of my rec certifications and they are great to have, but they don't mean much when really going into tech. With tech it's not the certification that counts, but mastering the needed skills at...
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    Question Fx-ccr and Shark ccr

    The FX-CCR is so new there are hardly any divers around that have used it.
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    JJ CCR Questions

    My take on your questions: I use my old and trsuty no name backplate wihout issues. I guess you can use the xDepp backplate as well (don't really know anything about them). Get the head protector. Otherwise, just sorb ans you'll be fine. Personally, I replaced the HUD with a Shearwater Nerd...
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    QC6 hard to connect

    Same here. My solution is to open the valve after connecting the QC6. Can't connect with thick gloves in the water.
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    GUE JJ configuration

    In my case it's right beside me. One grab is all I need to provide air. Personally I don't think there's much benefit having it tucked away under the loop.
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    Metalsub quick release system for doubles?

    No, that's not required. However, if you V-weights behind you backplate it can be usefull to take them apart. Less weight is always a good thing for me. I only use bolts, no washer etc. So there's only two bolts to release before the plate comes of.
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    Metalsub quick release system for doubles?

    Why would you want to use an quick release for doubles? I attach the backplate with two bolts/nuts (single an ddouble) and never felt the need for a quick release. So, I'am curious what you would like to achieve with this?
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    DIR- GUE GUE blessing new CCR model in next 2 years?

    Yeah, but then it's not GUE diving anymore :wink: In my opinion the JJ fits the GUE view on diving perfectly. It's robust and can be standardized. GUE CCR diving perspective is more than just about the unit used. It's the whole planning, unified equipment, etc. that's important to them. The unit...
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    DIR- Generic SPG dir requirements

    True, but when you plan a team dive it's best to follow the plan and not your personal computer. Different brands of computers can spit out very different deco schedules. Having said that, I do use my computer a an aid during deco. Always nice to have more information.
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    DIR- Generic SPG dir requirements

    Plan your dive, dive your plan. It does'nt matter what the computer says, the team is diving the plan or we're not going to dive anyway. A problem with Suunto computers is that they like to decide for you what's the best deco strategy. This may be different than your team plan, with the risk of...
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