How to make Solo Rebreather diving safer?

colinicky · 15th June 2006, 06:32

Quote: (Originally Posted by cedricverdier)

The questions are:
1- How to make sure that somebody at the surface will start to look for him in a reasonable time frame?

2- How to increase the chance for him to be quickly spotted by the other divers?

3- Any idea to help a rescuer to perform a safe ascent with the unconscious diver? (the rescuer can be an OC diver with absolutely no knowledge about rebreathers!)

1 As has been said have a max dive time after which the surface team move to rescue mode .

2 I know it sounds simple but when was the last time you saw a diver with a strobe attached ? When tied to the shot it makes finding your way back easier so could help the other way round

3 This is not so easy due to O2 injection ,set point switches , expansion of breathing loop volume on ascent needing vented . Sorry but as a newbie I have enough problems & I supposedly know what to do

Mark Chase · 15th June 2006, 08:05

REALITY CHECK for UK DIVING PLEASE

1: How many boats have support divers waiting to go on board (none in my diving history)

2: Unless on a return to deco station dive the current would have taken the divers a long way away from the dive site and the boat would have to sacrifice the few to protect the many SMBs on the surface, He doesn't even know the missing SMB represents a lost diver, he may just have failed to send up an SMB

3: By the time it is realized the diver is missing on MOST UK dives the current would be way too strong for a diver to get down to the wreck even dragging himself down the shot. Once at the bottom the current would make it hazardous on the wreck. Hand over hand conditions.

When we dive as a team we lay line and we return to the shot and ascend to a deco station. If a solo diver laid line on the wreck and tagged the line that would at least minimize the search area.

To make your rescue situation work a VERY disciplined team would have to agree to be back at the shot by a precise time. Then the last two teems would meet at the bottom of the shot prior to ascent.

Failure to meet up or a strobe left on the line by a third team / diver would force a search. Thus extending the bottom time but hey were on CCR so this is doable. The search would follow the missing divers line to its end. If the diver was not found on or just off the line the search would be aborted immediately.

As for inexperienced CCR divers bringing an unconscious diver to the surface?

Unless your going to do an induction to CCR on the boat pre dive your in trouble. Even then its a lot to take in when you have YBODS KISS Meg's Visions Hammer Heads etc etc on the boat.

So in conclusion my thoughts are, your solo, you pass out, you get lucky coz someone who knows what they are doing happens to pass you or you die.

ATB

Mark Chase

dive2dive2000 · 16th June 2006, 00:43

Here in the NY/NJ area all of the boats that I have dove always have one crew member in a dry suit ready to splash! What I have implemented ( Team, buddy, or solo diving) I have a red 55lb lift bag/surface Marker. about 7' long. I inform Cap, crew, and divers, that if you see this I screwed up or I am in trouble come get my ass and bring gas and O2.

***ScubaDadMiami*** · 16th June 2006, 02:13

Along the lines mentioned earlier, we have taken clips (such as slider bolts) which we attach to the bottom of the line after descent, and then we remove when on our way to the surface. So, if someone doesn't make the line by the max time allowed per the plan, divers can start the search rather than delaying until after ascent and then realizing that someone is late on the return.

Mixaddict · 16th June 2006, 03:57

When we are doing any type of technical diving, our group always has surface suport that is capable of at least splashing and taking a quick look around if something is going wrong. Every team on the boat or from shore for that matter, files a dive plan with the surface suport. If the wrong color SMB surfaces, or any team is late surfacing for more than a pre-agreed upon contingency paln, then the surface suport splashing to see what is going on. Many times they will use a scooter for optimal coverage.

The first time I dove with this team, it seemed like overkill to me. Over the years, it has come in handy a number of times!

Plan for the what ifs, and hope they don't happen!

Regards,
MixAddict

***Louby Lou*** · 24th June 2006, 21:39

Hi All

Just to let you know that Cedric has updated his article and it can be found HERE in the library and also on Cedric's website

Cheers

Lou

Mdemon · 26th June 2006, 07:12

Quote:

Chasey: If you're solo who's bringing you back up?

My DS hose developed a tiny leak (constant dribble into the suit) and I was about to change it on my last deep solo when it struck me that this was probably the only way I'd get home if I toxed/passed out. A chilling thought. I did swap the hose, but not until after a long think.

Something else which played on my mind for some of the solo stuff I've done is that I take equipment for me only. I was playing in an area where there were other divers and I was very concerned that one of them would "present themselves" looking for emergency gas - which I couldn't give them. Imagine the ensuing nightmare. Maybe, ironically, solo divers should take some form of extra gas for such situations. (This is very site/dive and equipment-specific to me, but may apply to others too.)

zarathustra · 26th June 2006, 14:04

Quote: (Originally Posted by Mdemon)

My DS hose developed a tiny leak.....this was probably the only way I'd get home if I toxed/passed out.

Yes, it would get you home, but probably not alive. You would likely embolize badly on the way up, even if you had a FFM.

I read a lot of discussion about your buddy saving you when you black out, but in reality, how likely is this? What happens if you black out 1500 feet into a cave (or even 500 for that matter). I doubt you will be alive after your buddy drags you 500 feet to the surface if you do not have a FFM. I recently watched an inert diver tow drill in a cave by a very accomplished diver - it was not pretty, and it was on OC. It would have been much worse if it was CCR.

Solo CCR has advantages over solo OC, like a lot more time to solve problems or emergencies. Without a FFM, it doesn't appear that your odds of surving a blackout at depth are very good, even with the best buddy.

SteveL · 26th June 2006, 15:25

Last weekend - diving mk15.5 - usual tin can alley dive (disposal area) well its wet aint it.........

Anyway calibrated the unit in the shed the night before - just tinkering but all OK - being a calibration nazi I redid it at the shop the next morning just before getting on the boat - no drama all good. close the mouthpiece and get on the boat tell the usual BS stories on the way out - bloody sun wasnt even up - bugger this winter diving business ......

Got geared up switched on the unit so it start injecting 02 in the loop - pre breathe for a few minutes while somebody is buggering around truing to pick the wreck - still all systems normal - the 02 droped to about .6 or so during the prebreathe but slowly and it started to climb - still all system seem normal - remember Mk units only have a single setpoint for the dive - (oh - and off!!) because of the flow restrictor and the way the system woks I have found that I do not get any big spikes on decent, particularly as so much dill going into the system - anyway I get to the bottom of the anchor and check the primary display - 2 red leds - one saying that PP02 significantly lower than setpoint and the other is an alarm to back up the first -

First thought was that its strange that the 02 is so low - unusual - anyway start injecting 02 to bring up - nothing happens - look at the secondary - bugger - 0.42 - 0.5 and 1.55 - shitza - still hanging at the bottom of the anchor trying to figure this mess then I notice that the solenoid is firing a lot and I am constantly blowing bubbles out the overpressure valve - some more 02 injecting - cells still the same as before - something is not right - thinking.....

My fingers seems to be remarkably warm for this time of year - SHIT - I just realised the problem - I was starting to have an 02 hit - IMMEDIATLY started back up the line with my finger on the dill button - got up to about 30 meters and stoped as I thought a steam ship was going over head I had this loud drumming in my head and it was LOUD just like a big ship going over - FARRRK - I dumped the loop and went to OC air bailout and sucked in pretty hard - not exactly sure for how long maybe 2 minutes but the drumming went away and I kept going up the line - trying to get a grip on my self - missed a couple of stops on the way but figured that if I was that dosed up on 02 then it probably didnt matter anyway - just needed to get shallow and up - just kept thinking to keep a grip, focus on the rope and get shallow so the bloody PP02 got lower

Got to 6 meters and tried to calm down - figered that even if I have pure o2 in the loop here it would be OK so I went back on the loop as I thought about deco issues - I kept the OC reg in my hand incase the drumming came back - after a while I flushed the loop with o2 and the primary display was still in the red (low) and the secondary was still showing 3 totally different readings - finished my deco according to the vr3 and made my way back to the boat.

Got on the boat and the first question from boat guys - what flavour soup? - nearly capped myself - who gives a crap about soup.

Anyway got out of my kit and finally did have some soup - about 1/2hr later I was looking at my secondary and all the cells were reading more or less the same - about 0.9 - more thinking - got out of the water with a loop full of o2 breathed it down abit so to be in this range would make sense. mmmmmmm

Got back to the shop and flused the loop as if doing a calibration - all Ok cells came up to spec.

Quite frankly it put the wind up me and has made me think alot more about this solo stuff and what else can go wrong. I have been diving since 1982 and breathers since 2002 so I dont consider myself a novice at this game (and not so stupid to think I know it all either BTW) - I have had my fair share of close calls but I think that this one was the closest.

I was essentially diving alone - as this is a site we all dive most weekends and one which we know the wrecks very well.

So what to draw from all of that :

Firstly - current limited cells !! maybe its rare but they did all seem to fail at the same time - now having said that I have done a few long dives prior to this in very shallow water (comparitivly 6 - 10m) getting my gear sorted for some very deep dives next month - on thse shallow dives I had the setpoint set to either 0.7 or sometimes 0.4

So at these setpoints the cells seem to behave as they should and gave no indication of problems.

Secondly - no companion - if I had a full blown tox not sure what he could have done anyway apart from bring me back up and .....

Thirdly - raises the question of regardless of solo or not we should take some reasonable precautions for what we might describe as the most probable problems that could arise.

Like many people have said on this list you can never cover every contingency or worry about every possible outcome, if that was the case you would never go outside or get in a caror especially go diving.

But you do wear a seatbelt, you do look left and right before crossing the road and yes diving a rebreather does elevate the risk of an accident - so what are the most likely accidents and how can we mitigate them.

Its a bit like wearing a seatbelt in the car - you can still get killed in an accident if it really goes to crap but for the "majority" and I use that word cautiously of crashes it helps to save you life.

So in my case a FFM may not be the ultimate lifesaving divice but using one possibly does far less harm than not wearing one and if I had have had a full blowen tox would have least hopefully stopped me from drowing straight away - im in the market for one now btw.

Having a way to test cells at greater than 1ata would be a bonus in this case - I've already dug out an old metal tourch canister and am going to make a pot for just this -

So what else ??

Sorry for the crappy spelling and even worse typing - but like many others on here I find great benefit from reading about suffups and real life problems that people have had - hopefull I can learn something and not make the same mistakes.

I have been diving an inspo for years and brought a 15.5 at the beginning of January - so one would assume the cells were OK - obviously not - and I am lucky to have found out - so do not take this for granted - the pressure pot test will help sort this out for the next batch.

Hope this helps - i you do dive solo then this sort of thing becomes even more important.

Regards,

Steve L

cedricverdier · 26th June 2006, 23:53

Quote: (Originally Posted by SteveL)

Having a way to test cells at greater than 1ata would be a bonus in this case - I've already dug out an old metal tourch canister and am going to make a pot for just this -

Steve L

Scary story Steve!! Quite interesting.

Please also let us now about the cell tester you'll build.

Cheers

15th June 2006, 06:32	#21 (permalink)
colinicky Custom Title Allowed! Current Rebreather/s: Inspiration Vision Other Rebreather/s: Inspiration Classic Join Date: Mar 2005 Location: uk Posts: 667	Re: How to make Solo Rebreather diving safer? Quote: (Originally Posted by cedricverdier) The questions are: 1- How to make sure that somebody at the surface will start to look for him in a reasonable time frame? 2- How to increase the chance for him to be quickly spotted by the other divers? 3- Any idea to help a rescuer to perform a safe ascent with the unconscious diver? (the rescuer can be an OC diver with absolutely no knowledge about rebreathers!) 1 As has been said have a max dive time after which the surface team move to rescue mode . 2 I know it sounds simple but when was the last time you saw a diver with a strobe attached ? When tied to the shot it makes finding your way back easier so could help the other way round 3 This is not so easy due to O2 injection ,set point switches , expansion of breathing loop volume on ascent needing vented . Sorry but as a newbie I have enough problems & I supposedly know what to do __________________ Colin I trust my rebreather completely , I just don't trust the user onwards & downwards
(Offline)

15th June 2006, 08:05	#22 (permalink)
Mark Chase I go down for ages Current Rebreather/s: Classic Kiss Other Rebreather/s: Inspiration Classic Join Date: Jan 2005 Location: Kent Posts: 2,699	Re: How to make Solo Rebreather diving safer? REALITY CHECK for UK DIVING PLEASE 1: How many boats have support divers waiting to go on board (none in my diving history) 2: Unless on a return to deco station dive the current would have taken the divers a long way away from the dive site and the boat would have to sacrifice the few to protect the many SMBs on the surface, He doesn't even know the missing SMB represents a lost diver, he may just have failed to send up an SMB 3: By the time it is realized the diver is missing on MOST UK dives the current would be way too strong for a diver to get down to the wreck even dragging himself down the shot. Once at the bottom the current would make it hazardous on the wreck. Hand over hand conditions. When we dive as a team we lay line and we return to the shot and ascend to a deco station. If a solo diver laid line on the wreck and tagged the line that would at least minimize the search area. To make your rescue situation work a VERY disciplined team would have to agree to be back at the shot by a precise time. Then the last two teems would meet at the bottom of the shot prior to ascent. Failure to meet up or a strobe left on the line by a third team / diver would force a search. Thus extending the bottom time but hey were on CCR so this is doable. The search would follow the missing divers line to its end. If the diver was not found on or just off the line the search would be aborted immediately. As for inexperienced CCR divers bringing an unconscious diver to the surface? Unless your going to do an induction to CCR on the boat pre dive your in trouble. Even then its a lot to take in when you have YBODS KISS Meg's Visions Hammer Heads etc etc on the boat. So in conclusion my thoughts are, your solo, you pass out, you get lucky coz someone who knows what they are doing happens to pass you or you die. ATB Mark Chase __________________ Is it supposed to make that noise ? I took my unit to the dive shop and demanded they bolt on every thing that would fit. Join my elite diving teem and get a Tshirt "Doing It Chasey"Hammerhead Eccr Advanced Diving System Last edited by Mark Chase : 15th June 2006 at 08:07.
(Offline)

16th June 2006, 00:43	#23 (permalink)
dive2dive2000 PRISM DIVER & LUVIN IT! Current Rebreather/s: Prism Topaz Other Rebreather/s: Join Date: Feb 2005 Location: Long Island, NY Posts: 788	Re: How to make Solo Rebreather diving safer? Here in the NY/NJ area all of the boats that I have dove always have one crew member in a dry suit ready to splash! What I have implemented ( Team, buddy, or solo diving) I have a red 55lb lift bag/surface Marker. about 7' long. I inform Cap, crew, and divers, that if you see this I screwed up or I am in trouble come get my ass and bring gas and O2. __________________ Safe Diving, Martin
(Offline)

16th June 2006, 02:13	#24 (permalink)
*ScubaDadMiami* Moderator Current Rebreather/s: Optima Other Rebreather/s: Join Date: Sep 2005 Location: Florida, USA Posts: 2,130	Re: How to make Solo Rebreather diving safer? Along the lines mentioned earlier, we have taken clips (such as slider bolts) which we attach to the bottom of the line after descent, and then we remove when on our way to the surface. So, if someone doesn't make the line by the max time allowed per the plan, divers can start the search rather than delaying until after ascent and then realizing that someone is late on the return. __________________ Howard Packer IANTD CCR Instructor Miami Beach, Florida CCRDiveTraining.com
(Offline)

16th June 2006, 03:57	#25 (permalink)
Mixaddict Always Learning! Current Rebreather/s: Inspiration Vision Evolution Other CCR Dolphin Other Rebreather/s: Inspiration Classic Other CCR Dolphin Join Date: Jan 2006 Location: Draper, Utah USA Posts: 476	Re: How to make Solo Rebreather diving safer? When we are doing any type of technical diving, our group always has surface suport that is capable of at least splashing and taking a quick look around if something is going wrong. Every team on the boat or from shore for that matter, files a dive plan with the surface suport. If the wrong color SMB surfaces, or any team is late surfacing for more than a pre-agreed upon contingency paln, then the surface suport splashing to see what is going on. Many times they will use a scooter for optimal coverage. The first time I dove with this team, it seemed like overkill to me. Over the years, it has come in handy a number of times! Plan for the what ifs, and hope they don't happen! Regards, MixAddict
(Offline)

24th June 2006, 21:39	#26 (permalink)
*Louby Lou* XLVI WC! Current Rebreather/s: Inspiration Vision Other Rebreather/s: Inspiration Classic Join Date: Feb 2005 Location: Roman Corinium! Posts: 1,018	Re: How to make Solo Rebreather diving safer? Hi All Just to let you know that Cedric has updated his article and it can be found HERE in the library and also on Cedric's website Cheers Lou __________________ Miss Lou x Use of Rebreather World is subject to the Rebreatherworld Terms and Conditions - Please read! Outlaw Divers - Sssh we're diving! You heff vays uff dealink vis zem, oh Miss Rebreather World Admin! - Rob Davie Feb 06
(Offline)

26th June 2006, 07:12	#27 (permalink)
Mdemon SiegeEngine II Current Rebreather/s: Inspiration Classic Home Build Other Rebreather/s: Inspiration Classic Home Build Join Date: Feb 2007 Location: SWUK Posts: 1,926	Re: How to make Solo Rebreather diving safer? Quote: Chasey: If you're solo who's bringing you back up? My DS hose developed a tiny leak (constant dribble into the suit) and I was about to change it on my last deep solo when it struck me that this was probably the only way I'd get home if I toxed/passed out. A chilling thought. I did swap the hose, but not until after a long think. Something else which played on my mind for some of the solo stuff I've done is that I take equipment for me only. I was playing in an area where there were other divers and I was very concerned that one of them would "present themselves" looking for emergency gas - which I couldn't give them. Imagine the ensuing nightmare. Maybe, ironically, solo divers should take some form of extra gas for such situations. (This is very site/dive and equipment-specific to me, but may apply to others too.) __________________ www.southwestmafia.com "small minds talk about people, Average Minds Talk About Events, GREAT MINDS TALK ABOUT IDEAS!" The WRONG Attitude will get you killed. "Once the agenda-monkeys and perfect-worlders have moved on, perhaps we can do some diving?"
(Offline)

26th June 2006, 14:04	#28 (permalink)
zarathustra New Member Current Rebreather/s: Inspiration Classic Megalodon Other Rebreather/s: Join Date: May 2006 Location: Iowa Posts: 5	Re: How to make Solo Rebreather diving safer? Quote: (Originally Posted by Mdemon) My DS hose developed a tiny leak.....this was probably the only way I'd get home if I toxed/passed out. Yes, it would get you home, but probably not alive. You would likely embolize badly on the way up, even if you had a FFM. I read a lot of discussion about your buddy saving you when you black out, but in reality, how likely is this? What happens if you black out 1500 feet into a cave (or even 500 for that matter). I doubt you will be alive after your buddy drags you 500 feet to the surface if you do not have a FFM. I recently watched an inert diver tow drill in a cave by a very accomplished diver - it was not pretty, and it was on OC. It would have been much worse if it was CCR. Solo CCR has advantages over solo OC, like a lot more time to solve problems or emergencies. Without a FFM, it doesn't appear that your odds of surving a blackout at depth are very good, even with the best buddy.
(Offline)

26th June 2006, 15:25	#29 (permalink)
SteveL Custom Title Allowed! Current Rebreather/s: MK 15.X Other Rebreather/s: Inspiration Classic Join Date: Nov 2005 Location: Sydney Australia Posts: 222	Re: How to make Solo Rebreather diving safer? Last weekend - diving mk15.5 - usual tin can alley dive (disposal area) well its wet aint it......... Anyway calibrated the unit in the shed the night before - just tinkering but all OK - being a calibration nazi I redid it at the shop the next morning just before getting on the boat - no drama all good. close the mouthpiece and get on the boat tell the usual BS stories on the way out - bloody sun wasnt even up - bugger this winter diving business ...... Got geared up switched on the unit so it start injecting 02 in the loop - pre breathe for a few minutes while somebody is buggering around truing to pick the wreck - still all systems normal - the 02 droped to about .6 or so during the prebreathe but slowly and it started to climb - still all system seem normal - remember Mk units only have a single setpoint for the dive - (oh - and off!!) because of the flow restrictor and the way the system woks I have found that I do not get any big spikes on decent, particularly as so much dill going into the system - anyway I get to the bottom of the anchor and check the primary display - 2 red leds - one saying that PP02 significantly lower than setpoint and the other is an alarm to back up the first - First thought was that its strange that the 02 is so low - unusual - anyway start injecting 02 to bring up - nothing happens - look at the secondary - bugger - 0.42 - 0.5 and 1.55 - shitza - still hanging at the bottom of the anchor trying to figure this mess then I notice that the solenoid is firing a lot and I am constantly blowing bubbles out the overpressure valve - some more 02 injecting - cells still the same as before - something is not right - thinking..... My fingers seems to be remarkably warm for this time of year - SHIT - I just realised the problem - I was starting to have an 02 hit - IMMEDIATLY started back up the line with my finger on the dill button - got up to about 30 meters and stoped as I thought a steam ship was going over head I had this loud drumming in my head and it was LOUD just like a big ship going over - FARRRK - I dumped the loop and went to OC air bailout and sucked in pretty hard - not exactly sure for how long maybe 2 minutes but the drumming went away and I kept going up the line - trying to get a grip on my self - missed a couple of stops on the way but figured that if I was that dosed up on 02 then it probably didnt matter anyway - just needed to get shallow and up - just kept thinking to keep a grip, focus on the rope and get shallow so the bloody PP02 got lower Got to 6 meters and tried to calm down - figered that even if I have pure o2 in the loop here it would be OK so I went back on the loop as I thought about deco issues - I kept the OC reg in my hand incase the drumming came back - after a while I flushed the loop with o2 and the primary display was still in the red (low) and the secondary was still showing 3 totally different readings - finished my deco according to the vr3 and made my way back to the boat. Got on the boat and the first question from boat guys - what flavour soup? - nearly capped myself - who gives a crap about soup. Anyway got out of my kit and finally did have some soup - about 1/2hr later I was looking at my secondary and all the cells were reading more or less the same - about 0.9 - more thinking - got out of the water with a loop full of o2 breathed it down abit so to be in this range would make sense. mmmmmmm Got back to the shop and flused the loop as if doing a calibration - all Ok cells came up to spec. Quite frankly it put the wind up me and has made me think alot more about this solo stuff and what else can go wrong. I have been diving since 1982 and breathers since 2002 so I dont consider myself a novice at this game (and not so stupid to think I know it all either BTW) - I have had my fair share of close calls but I think that this one was the closest. I was essentially diving alone - as this is a site we all dive most weekends and one which we know the wrecks very well. So what to draw from all of that : Firstly - current limited cells !! maybe its rare but they did all seem to fail at the same time - now having said that I have done a few long dives prior to this in very shallow water (comparitivly 6 - 10m) getting my gear sorted for some very deep dives next month - on thse shallow dives I had the setpoint set to either 0.7 or sometimes 0.4 So at these setpoints the cells seem to behave as they should and gave no indication of problems. Secondly - no companion - if I had a full blown tox not sure what he could have done anyway apart from bring me back up and ..... Thirdly - raises the question of regardless of solo or not we should take some reasonable precautions for what we might describe as the most probable problems that could arise. Like many people have said on this list you can never cover every contingency or worry about every possible outcome, if that was the case you would never go outside or get in a caror especially go diving. But you do wear a seatbelt, you do look left and right before crossing the road and yes diving a rebreather does elevate the risk of an accident - so what are the most likely accidents and how can we mitigate them. Its a bit like wearing a seatbelt in the car - you can still get killed in an accident if it really goes to crap but for the "majority" and I use that word cautiously of crashes it helps to save you life. So in my case a FFM may not be the ultimate lifesaving divice but using one possibly does far less harm than not wearing one and if I had have had a full blowen tox would have least hopefully stopped me from drowing straight away - im in the market for one now btw. Having a way to test cells at greater than 1ata would be a bonus in this case - I've already dug out an old metal tourch canister and am going to make a pot for just this - So what else ?? Sorry for the crappy spelling and even worse typing - but like many others on here I find great benefit from reading about suffups and real life problems that people have had - hopefull I can learn something and not make the same mistakes. I have been diving an inspo for years and brought a 15.5 at the beginning of January - so one would assume the cells were OK - obviously not - and I am lucky to have found out - so do not take this for granted - the pressure pot test will help sort this out for the next batch. Hope this helps - i you do dive solo then this sort of thing becomes even more important. Regards, Steve L
(Offline)

26th June 2006, 23:53	#30 (permalink)
cedricverdier S21 M.I.B. Current Rebreather/s: Evolution Megalodon Other Rebreather/s: Not Bought Yet Inspiration Classic Inspiration Vision Sport Kiss Classic Kiss Join Date: Apr 2005 Location: Worldwide! Posts: 497	Re: How to make Solo Rebreather diving safer? Quote: (Originally Posted by SteveL) Having a way to test cells at greater than 1ata would be a bonus in this case - I've already dug out an old metal tourch canister and am going to make a pot for just this - Steve L Scary story Steve!! Quite interesting. Please also let us now about the cell tester you'll build. Cheers __________________ Cedric Verdier PADI Course Director, ANDI-IANTD-PSAI-TDI-DSAT-DAN-NAUI-CMAS Instructor Trainer Trimix (CCR and OC) and Cave Diving Instructor Trainer www.CedricVerdier.com DIRrebreather member
(Offline)

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode