Glass lens frameless Mask fogging issue
- Thread starter Kevin Floyd
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Do NOT use comet. It is too rough and can scratch the glass if you scrub too hard.
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Not yet. Those two MSDS listed components are propellants. I'm guessing that they were chosen to dissolve silicone-200 in the can under pressure where they would both be liquids. After spraying, they are gone.
There are other ways to apply a release agent including a rag. I'm still looking at low viscosity silicone oils as the release agent, they have all the right properties:
Quoting:
- High oxidation resistance
- High shearability without breakdown
- High spreadability
- High temperature serviceability
- High water repellency
- Low environmental hazard
- Low fire hazard
- Low odor
- Low reactivity
- Low surface energy
The spreadability and low surface energy of such silicone oils mean that they will crawl across most surfaces and (not shown above) they don't evaporate.
Done 7 or more without problem.
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Getting close. I just have to convince myself to buy the very last thing that I need, yet another mask.
So, suppose that it is a release agent on the skirt. I would then think that job one is to clean the skirt first. I'm thinking that a run through the dishwasher with an extra helping of that really alkaline soap would be step one.
Step two would be to see if the glass fogs (I'm guessing that it will) and then attempt to remove the surface contamination. I like to start with extremes so my first trial would be to pour a bit of liquid sink-clog opener (lye) onto the inside of the lens and let it sit for a while...
Dang. New definition of extremophile! You could also use a flamethrower.
I’d love to get a definitive answer on that release chemical from a manufacturer. I’m certain that they all use the same compund.
I’d love to get a definitive answer on that release chemical from a manufacturer. I’m certain that they all use the same compund.
scubafanatic
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OP
Kevin Floyd
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Update: so i flamed both the inside and out side with a regular bic lighter. After it cooled I used some soft scrub to clean the soot off and applied a layer of frog spit multi dive defogger.
I try them out in the pool. They were better but still started to fog about 30min in to it.
I have now flamed them again this time with a cigar jet lighter. No soot this time but I think that is a result of the lighter and not so much anything burning off the lens. I cleaned them with comet this time and will use my normal gel defogger before I get in the water.
I’m going to dive a lake tomorrow reported water temp around 54*
I try them out in the pool. They were better but still started to fog about 30min in to it.
I have now flamed them again this time with a cigar jet lighter. No soot this time but I think that is a result of the lighter and not so much anything burning off the lens. I cleaned them with comet this time and will use my normal gel defogger before I get in the water.
I’m going to dive a lake tomorrow reported water temp around 54*
scrane
Contributor
I never flame the outside.
I never flame til things turn black.
I never flame to the extent that the glass has to cool.
I never flame til things turn black.
I never flame to the extent that the glass has to cool.
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