Where is the video?
Posts by Wishihadgills
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How do you check all of those cuda for cig? Dont most of the one that large have it? Ive heard of a "cuban" method involving black ants? Any truth to that?
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Definitely not a fan of barracudas either. The dive instructor that I got my SCUBA cert with lost his eye to a barry. (Richard Ridell) Obviously a 1 in a million event but I hate how they follow me around the reef hovering at the edge of visibility. I wouldnt say Im scared of them per say but I definitely have a healthy respect for what they are capable of.
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Phil do you sand between the first 3 coats? Also if I wanted a more natural wood grain look what would you suggest?
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The million dollar question.
Best answer: Practice <img src= " height="23" srcset="https://spearfishing.world/forum/images/smilies/emojione/1f606@2x.png 2x">
there is no substitute for experience but some people swear by O2/CO2 tables. I personally have no experience with them. Another option if take a freediving class. They are expensive but the information you learn is supposed to be invaluable. (not to mention all the safety tips that you will learn) Ill be taking one this summer.
good luck
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I wanted to start a thread that pulled together all of the knowledge and expertise that this forum has to offer so I searched through all of the speargun posts and came up with this list of threads that will make a great starting point for any first time builder and even some more experienced guys. There are a few threads that are missing that will be added and if you think there is something I missed feel free to PM me and Ill gladly add it.
Grips
Tweaking the AR-15 handle - SpeardiverRAT grip custom handle material - Speardiver
New & improved AR-15 handle frames for sale - Speardiver
Simple mortised handle? - Speardiver
Cable Splicing
Braiding cable shooting line - Page 2 - SpeardiverChoosing a shaft
Which shaft? - SpeardiverMaking Blanks
An experiment in vacuum bagging - SpeardiverTin Man's automatic line release system - Speardiver
Ballasting
Ballasting speargun - how much weight? - SpeardiverEpoxy
Differences between Epoxy brands - Speardiverherranen speargun coating epoxy - Speardiver
Bands
Bands out of position, rubber tubing spacer - SpeardiverBand tying line question - Speardiver
how to correctly power gun - Speardiver
Style
Wood burning as a way to add artistic flourish to your gun - SpeardiverBuild Examples
http://spearfishing.world/spea…da-bluewater-build-7.htmlCustom wood speargun build with pics - Speardiver
first gun build, 63" midhandle - Speardiver
Lost Wax concept gun - Speardiver
65" wahoo toothpick - Page 2 - Speardiver
First Hybrid Build - Speardiver
A few gun build pics - Speardiver
More fun with Carbon Fiber - Lost Wax Barrel? - Speardiver
Building a hybrid
http://spearfishing.world/spea…1298-how-make-hybrid.htmlEnclosed Tracks
new to enclosed tracks - SpeardiverParts
Adrian's new muzzle - SpeardiverModifed Neptonics Reef Mech - Speardiver
Line release
Heinrich line release & pin - SpeardiverHeinrich line release - Speardiver
Tin Man's automatic line release system - Speardiver
Materials
Shapelock - SpeardiverSyntactic foam as a gun building material - Speardiver
Tips
Drill press trigger trick - SpeardiverBand Slot
Slot shape and band alignment - SpeardiverTools
Simple router centering jig - SpeardiverChoosing a Shaft
shaft overhang - Speardiver -
you can also look into the under armor leggings, basically lycra pants. or get some shorter shorts. Have you tried the pelagic shorts? I love them. They are lighter and shorter than most shorts.
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Got a chance to do a little work while I was back home for the weekend. Shaped the front drilled the band holes and recessed the line guide and line anchor. No all I have left is:
recess the reel
epoxy
attach butt pad
tie bands
ballast
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To prevent sunburn a simple lycra rash guard will work. If you want a little protection from coral and jellyfish then a lined 1.5 mil neoprene shirt would be what you want. I wear a shirt and the scrapes on it will more than attest to its usefulness. That being said Ill probably get a lycra shirt this summer for the really hot days.
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Just about every dive shop I have been to recommended starting on a sling. I personally hated it but it was a good way to get used to hunting and it does make you have to get very close witch helps later on. the other reason a sling is great is you can get a block and a cheap shaft for 50-75 $ where as a decent pole spear is at least 150$. I would recommend 9/32 or the 7mm (almost the same) and after seeing Dan's method for attaching line to it I wouldn't do it any other way.
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They might be. A few companies have designs that area little larger but in order to get to the bone around the eye your nearly at a mask. I noticed the part that would rest around the corner of the eye seems more pronounced than on most goggles and that could alleviate some of the pain. Are we all sure that hes not using liquid goggles? I have heard about competition divers that use them. if his goggles were full of water he wouldnt have any problems.
Im still a skeptic and dont believe these are a revolutionary design.
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I agree that the pressure of the air isnt what causes the pain but the internal and external pressures arent exactly the same. If you draw a force diagram on the mask there are three forces acting on the mask(excluding the force from the band because that stays constant regardless of depth). 1 the pressure from the water (pointing towards the face) 2 the force from the air inside the mask (pointing out) and 3 the normal force of the face (pointing out). At the surface the internal air pressure is very close to the external air pressure and therefore the normal force isnt very very large (ie still comfortable) as you dive the mask volume begins to decrease as external pressure increases but because of the shape and material the mask isnt allowed to change volume enough so the normal force from you face increase (ie starts to hurt) if you were to dive to 10 m the volume of the mask would have to be half of what it was at the surface. (your nose and forehead wont allow this to happen and the glass keeps it from moving too much around your eyes. Then when you equalize you add more air which increases the internal pressure and reduce the normal force back to a comfortable level. If the internal and external pressures where equal then the force of your face would push the mask off your face.
It would seem if the goggle were able to distribute the force over a large enough surface area or like you said Jeff, press against a less sensitive part of the eye that they could reduce the pain. However, I doubt that the engineers in the RD department at speedo didnt think of that before.
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My bad I got them mixed up. (Avogadro's is the law that should be used in both situations) A scuba tank will heat up (very small amount) as is goes under but this dissipates quickly. Boyles law is very similar but only applies when temperature can be held constant. (Im not trying to lecture) Im only a freshman at Ga Tech.
In the goggle situation it has less to do with pressures and more to do with forces. If a change in pressure is what caused pain then humans wouldnt be able to dive at all. Your lungs change volume the entire dive but it doesnt hurt, (usually)
I seriously doubt that these goggles have managed to avaoid the laws of physics and there design doesnt seem revolutionary. I think this is more a product of how this man has adapted to what he has. Its possible he can equalize with his eyes but I would be surprised if thats what he was doing. (Ididnt see him equalize at all) I think the company is mostly taking advantage of the hype and really wont sell that many of these once people realize they arent very special. Even the video is slightly sensationalized as I doubt he normally walks along the bottom like that.
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It doesnt quite work like that. The gas inside the goggles at the surface is at an equal pressure to the outside air keeping the goggles from pressing against your face. Underwater the outside pressure is what pushes the mask/goggles against your face. The application of boyle's law is the reason adding air inside the mask works. more air same volume = higher pressure. basically the squeeze come from an imbalance of pressure. The actual pressure inside the mask wont change until you add more air.
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Phil how do you keep the low viscosity epoxy from running?
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Whoops didnt see phils post. <img src= " height="23" srcset="https://spearfishing.world/forum/images/smilies/emojione/1f606@2x.png 2x">
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A microwave wont work. Microwaves produce a frequency that energizes water, fat and sugar molecules in food so it wont heat the resin..
I would use a warming plate but I dont know how hot I should warm it. I have also heard that it is better to mix each part prior to mixing instead of after they have been mixed to prolong work time. Another way you could do it would be to heat up hot water then place the containers in the water but I dont know if thats a good idea but it would work.
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Phil do you hang your guns when your coating them or do you use a rolling device like Don Paul described?
Also how so you seal the trigger pocket and other tight places on the gun? I have some very tight clearance problems and it would be difficult to make them any wider. Would penetrating epoxy be effective in theses spots?
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My bad Dan your right. Dan can you elaborate on what Judah said?
"The original case has terrible resolution underwater?
Shouldn't that be fixed with the new lens or is there something else Im missing?
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Dan I think the effect your describing might be called vignetting? Im really interested in this camera and will most likely be getting one this summer when I get home.
Shallow Runner your basically asking for an impossibility, trying to balance video quality, price, size, picture quality, and do it all underwater. If its small it can take either decent video OR decent stills. If you want both then you need a bigger more advanced sensor. This also means more expensive. You can get a Cannon like the T1 or T2 put it in a 3000$ case and get great pics and video but this isnt small or cheap. From what Ive seen the gopro is the best compact HD camera that is cheap and works well underwater. If you want good stills there are the SeaLife cameras that take great stills and work underwater pretty well.
There is also the option Judah described which is to capture a "screenshot" from the video. This works and will avoid the vignetting but will not yield a very good pic and wont allow you to blow up the image too much.
These conclusions are from my experience with still photography above water so take them with a grain of salt. I am by no means an expert and I dont have any experience with the actual gopro camera.
Good Luck, If theres a better tool for the job I hope someone brings it up.
