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#11
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| On Mon, 28 Aug 2006 18:04:57 -0500, dazed and confuzzed <dedmann@comcast_remove.net> wrote: > Where do you find glass lenses? A local optical shop... I suspect that you can get them anywhere, but you have to order the lenses and as such, you're not going to get your glasses in an hour like some of the mall stores... Probably a couple of days to a week to get the glasses... There's the one shop that I tend to deal with usually... I've helped him out with some computer problems he was having and he gave me 3 pairs of glasses in appreciation -- far vision, computer monitor distance vision, and polarized far vision... The ones that I broke were my general purpose progressive prescription with the UV sensitive gradient shading... I usually use these when I'm working around the house or riding my motorcycle since the lenses are larger and don't let as much air hit the eyes... The shop has a web site and you can order online... http://www.eye-style.com When I first started wearing glasses *many* years ago, most lenses were glass and you had to pay extra for plastic... These days, it's the other way around... The plastic lense blanks are fairly cheap and the optical shops have automated equipment so that cutting the lenses from the blanks requires minimal human intervention... |
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#12
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| Grumman-581 wrote: > On Mon, 28 Aug 2006 18:04:57 -0500, dazed and confuzzed > <dedmann@comcast_remove.net> wrote: > >>Where do you find glass lenses? > > > A local optical shop... I suspect that you can get them anywhere, but > you have to order the lenses and as such, you're not going to get your > glasses in an hour like some of the mall stores... Probably a couple > of days to a week to get the glasses... There's the one shop that I > tend to deal with usually... I've helped him out with some computer > problems he was having and he gave me 3 pairs of glasses in > appreciation -- far vision, computer monitor distance vision, and > polarized far vision... The ones that I broke were my general purpose > progressive prescription with the UV sensitive gradient shading... I > usually use these when I'm working around the house or riding my > motorcycle since the lenses are larger and don't let as much air hit > the eyes... The shop has a web site and you can order online... > > http://www.eye-style.com Thanks! I have tried to get basic glass lenses (don't scratch as easily) for a BOB and cannot seem to find them locally. -- “TANSTAAFL” “All I can say is there had better be some cheese at the end of this maze……” __________________________________________________ __________________________ "A prudent man foresees the difficulties ahead and prepares for them; The simpleton goes blindly on and suffers the consequences." - Proverbs 22:3 |
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#13
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| On Tue, 29 Aug 2006 06:54:28 -0500, dazed and confuzzed <dedmann@comcast_remove.net> wrote: > Thanks! I have tried to get basic glass lenses (don't scratch as easily) > for a BOB and cannot seem to find them locally. I suspect that your local optical shop just didn't want to go to the trouble of ordering them for you... Yeah, they don't scratch as easy, but if you're running an angle grinder and only using them for eye protection, you will still find a small nick in them periodically... I would hate to see what the plastic lenses would look like though when the red hot metal sparks hits them... |
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#14
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| Lee Bell wrote: > Dillon Pyron wrote > > >>Prerequisite for deep weeks: - Advanced Nitrox Qualified > >>- DAN insurance ( or other ) > > > You dive below 30 meters on nitrox? > > Routinely. That's less than 100 feet. 32% is good to 111 at 1.4 PPO2 and > 28 goes considerably deeper. Don't forget EAN21. |
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#15
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| Thus spake Grumman-581 <grumman581@DIE-SPAMMER-SCUM-gmail.com> : >On Mon, 28 Aug 2006 18:04:57 -0500, dazed and confuzzed ><dedmann@comcast_remove.net> wrote: >> Where do you find glass lenses? > >A local optical shop... I suspect that you can get them anywhere, but >you have to order the lenses and as such, you're not going to get your >glasses in an hour like some of the mall stores... Probably a couple >of days to a week to get the glasses... There's the one shop that I >tend to deal with usually... I've helped him out with some computer >problems he was having and he gave me 3 pairs of glasses in >appreciation -- far vision, computer monitor distance vision, and >polarized far vision... The ones that I broke were my general purpose >progressive prescription with the UV sensitive gradient shading... I >usually use these when I'm working around the house or riding my >motorcycle since the lenses are larger and don't let as much air hit >the eyes... The shop has a web site and you can order online... > >http://www.eye-style.com > >When I first started wearing glasses *many* years ago, most lenses >were glass and you had to pay extra for plastic... These days, it's >the other way around... The plastic lense blanks are fairly cheap and >the optical shops have automated equipment so that cutting the lenses >from the blanks requires minimal human intervention... And my vision "plan" requires that the frames be shipped off to only god knows where. What should take a day takes 10. -- dillon If you can't figure out how to unmunge my address, email me and I'll explain it. |
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#16
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| Grumman-581 wrote: > On Tue, 29 Aug 2006 06:54:28 -0500, dazed and confuzzed > <dedmann@comcast_remove.net> wrote: > >>Thanks! I have tried to get basic glass lenses (don't scratch as easily) >>for a BOB and cannot seem to find them locally. > > > I suspect that your local optical shop just didn't want to go to the > trouble of ordering them for you... > > Yeah, they don't scratch as easy, but if you're running an angle > grinder and only using them for eye protection, you will still find a > small nick in them periodically... I would hate to see what the > plastic lenses would look like though when the red hot metal sparks > hits them... Actually, not too bad. I don't think that the 'sparks' carry that much heat or have enough mass to do much damage. in fact, Because plastic is, well, plastic, I don't think the carborundum chips do as much damage to them as to glass. But long term, Glass is better. -- “TANSTAAFL” “All I can say is there had better be some cheese at the end of this maze……” __________________________________________________ __________________________ "A prudent man foresees the difficulties ahead and prepares for them; The simpleton goes blindly on and suffers the consequences." - Proverbs 22:3 |
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#17
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| "bullshark" <bullshark@gmail.com> wrote in message news:1156886172.286054.283400@74g2000cwt.googlegro ups.com... > > Lee Bell wrote: >> Dillon Pyron wrote >> >> >>Prerequisite for deep weeks: - Advanced Nitrox Qualified >> >>- DAN insurance ( or other ) >> >> > You dive below 30 meters on nitrox? >> >> Routinely. That's less than 100 feet. 32% is good to 111 at 1.4 PPO2 >> and >> 28 goes considerably deeper. > > Don't forget EAN21. The "E" stands for enriched. How is 21% enriched? I always use trimix for deep dives. A .0005% He mix is just about right for the Spiegel Grove. |
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#18
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| bullshark wrote >>> Routinely. That's less than 100 feet. 32% is good to 111 at 1.4 PPO2 >>> and 28 goes considerably deeper. >> Don't forget EAN21. Good point. Normal convention suggests that, when talking about nitrox, we mean something with more than 21% oxygen, but technically, any mix of nitrogen and oxygen qualifies, including air. > The "E" stands for enriched. How is 21% enriched? Big deal. He called it EAN instead of Nitrox. You understood what he meant, right? > I always use trimix for deep dives. A .0005% He mix is just about right > for the Spiegel Grove. Let's get our terminology right. That's 21/.0005. I used 30/.0005 last time we were down there. Lee |
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#19
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| "Lee Bell" <pleebell2@bellsouth.net> wrote in message news:vFrJg.14058$ry2.5718@bignews3.bellsouth.net.. . >> The "E" stands for enriched. How is 21% enriched? > > Big deal. He called it EAN instead of Nitrox. You understood what he > meant, right? So maybe I did. But bullshark loves it when I nitpick and I only nitpick bullshark because you made the claim that "Bullshark, on the other hand, has a long history of very precise and accurate posts in this forum." >> I always use trimix for deep dives. A .0005% He mix is just about right >> for the Spiegel Grove. > > Let's get our terminology right. That's 21/.0005. I used 30/.0005 last > time we were down there. Big deal. You understood what I meant, right? Oh, and it wouldn't be .0005 any longer after "diluting" the "mix" with pure oxygen. I could do the math, but it would make my head hurt right now. Maybe Grumman will oblige. |
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#20
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| On Tue, 29 Aug 2006 18:08:21 -0500, dazed and confuzzed <dedmann@comcast_remove.net> wrote: > But long term, Glass is better. Yeah, but these days, quite a bit more expensive than plastic from what I understand... Next time I'm over that way, I'll ask him what is the difference in the cost of the blanks... |
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