Sorry but that's not quite right powrwrap. Most high index materials like 1.67 and 1.74 lenses do just fine in a drill mount - I have five pairs in fact that haven't cracked or become loose.
Standard hard resin CR-39 plastic lenses are not good candidates for drill mounting as the material is too brittle and can/will crack. My wife's polycarbonate frames she bought from LensCrafters two years ago have actually developed hairline fractures in the lenses near the drill hole and had to be replaced in the first month. Although Poly is fine for most people. Trivex is a well reviewed rimless lens material due to it's superior clarity (abbe index) and strength. Look carefully at the design of the rimless frames. Frames that have at least two drill mount points per lens are better design. I've ordered rimless from Zenni, Coastal Contacts, LBW Eyewear and EyeBuyDirect - in my specific experience, Coastal's brand name frames were far superior in quality and have lasted the longest. J. Evan On Dec 28, 8:40 am, powrwrap <[email protected]> wrote: > On Dec 26, 5:40 am, Glasshunter <[email protected]> wrote: > > > Hello there, > > > I have decided to buy a rimless glass. However I think that I need to > > pay more attention in choosing a rimless glasses than other designs. > > So here I need some help please. > > > 1) Based on your experience, which seller provides the strongest > > rimless glasses? > > I've only bought from Zenni, but I've been quite satisfied. > > > 2) What kind of glasses material should I choose for rimless? I want > > to have a strong pair. > > Polycarbonate is recommended; I believe they will also do rimless with > Tyvex, otherwise you have no other options as they won't make rimless > glasses with weaker materials. > > > 3) Should I get a titanium based one, or other material is just fine? > > I think any material is fine. Pay attention to how the screws mount > into the lenses. Also be advised that you will have to handle rimless > frames a bit more cautiously than half-rims or full rims. For example > when I clean the lenses I always handle the frames by the bridge using > my index finger and thumb. I feel this puts less stress on the frame > when wiping the lenses with a microcloth. > > > I have problems just in one eye (-0.5) so I want to use the money > > wisely in a rimless glass. > > I'd give Zenni a shot. If you are looking at single vision lenses you > can get a set of rimless glasses very inexpensively. -- Check us out at the oft-updated http://glassyeyes.blogspot.com! You received this message because you are subscribed to the Google Groups "GlassyEyes" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/glassyeyes?hl=en
