It is not the lens material that makes the difference how they stand up, it is the fingers and hand that produces them.
The rimless hole type mountings are the some of the ones that are the most delicate of all of them. The worst was the Wilsedge which had a V
groove on top and was cemented into the frame. The Balgrip type was a large improvement over the 2 hole or 4 hole types, Numont and so forth.
Properly trained opticians where able to produce mounting for all of them even in flint glass, the most brittle of all of them. I can see that all of you guys and girls would prefer to dance in mountain boots than in glass shoes, or drink your champagne from cardboard cup than from a crystal glass.
There have been so many threads knocking Poly because it crazes from the holes. If you can't drill a proper hole use at least a drop of "Drillseal" and cure the problem forever. Not everybody can or wants to afford Trivex which acts like a heavy duty tractor. Get the fingers
and hands to do good job with anything that is available, that is were a real optician should stand.
CR39 is not an outcast and should not be, it still has best charateristics next to glass. You can still do some of the best and most profitable jobs with CR39, that can be tinted, UV'd, made scratch resistant right in your shop with a bit of know how, and only the cost of basic materials.
It looks like technology is producing novelties that are so simple to use to make finished products in our field, that will slowly eliminate the specialist that was able to make a good product from just about any material available.
I use cr-39 all the time. I refuse to sell something to a patient that they don't need, and when cr-39 is a good option, it's what I put my patients in. However, as a professional, I need to choose products that will work well for my patients, knowing full well they will be sat on, stepped on, yanked off by a child, shoved into a purse or a pocket. So I put patients in anything other than cr-39 or glass when using a rimless frame.
Again, I don't get why we are discussing this. If we could properly train our patients, then the properly trained opticians might be able to use all lens materials to their fullest.
I'm with Chris here, to a degree. When I started, all we drilled was glass, and cr-39 was a blessing when we got it. Every one of the drill Luxottica frames from the early 80's, thousands sold, all faceted, all blue/pink tint, had cr-39 ( All I can remember is Athens). I don't recall having serious cracking problems, some, but not an epidemic. I still to this day use cr-39 in grooved rimless, and have no problems.
Now, to my degree of agreeing. I also don't like to work or live in the past, and try to embrace the newer, hopefully better way of doing something. My drills now are primarily trivex, 1.6 on higher scripts, poly next for the rest. Just because I did it, doesn't mean it's the best for today.
In years ago dispensing(80's), before A/R coatings were on everything, the nylor jobs rarely came back chipped(when CR39 was used). This was happening because scratch resistant CR39 was pretty resistant to chipping. A/R coatings INCREASE chipping and breakeage....I now use trivex or 1.6 MR8 for all my drill mounts/nylor and depending on power have zero reservations about using 1.67 or 1.74. I just wish Trivex would come down in price.
Dear Steve,
Sorry for late reply, I am in China, and I have some difficulty in accessing OptiBoard. Yes, I am with Firmoo. The reason why I am here is not for promoting myself, I am here for letting us know what is going on the online side of the optical world. If this answer is not satisfactory, you can make your decision, hahaha.
Firmoo is doing pretty good, and we have got very good customer review. You can check our Facebook page for details.
Last edited by Patrick888; 03-12-2012 at 08:29 AM.
maybe they work at lenscrafters
I can't believe these fly by night onliners feel they satisfy the consumer with their 10 dollar designer glasses that won't fit.
You pay for what you get, honestly, a free pair of glasses is going to fall apart within a month. We shouldn't be getting worked up over this.
The on-liners have no professional pride in any way, they don't care as long as they make a sale. Their attitude is that the optician can take care of it for servicing the consumer. They also make only a decent profit if they sell quantities. They will not go away, they are here to stay.
As a professional the optician can correct or circumvent this by charging a professional fee for the time used. It is done in any other profession the plumber charges $ 90.00 for the service call, $ 0.90 cents for the material and the fraction of time ($ 70.00 p.hour) used to do the job.
So does the garage mechanic, the electrician, the barber charges $ 20.00 for a 15 minute haircut..............................so why can't the optician apply a same type charge.
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