need help on trivex

[eyesonjohn]

I need help on the best way to polish trivex lens. I can not seem to get a good polished edge on trivex no matter what we try. any help from the brains in the family would be greatly appreciated. thanks

[Matthew]

Here is what i do, it took me a time or two to get it right.

Trivex melts if buffer wheel is full speed.

I first use a high grit sandpaper to smooth the edges.

Next i use the GREEN Vigor rouge with buffer wheel set at half speed.

The material polishes VERY fast. Dont push too hard on the wheel, very light pressure is all that is needed.

[Cherry Optical]

I need help on the best way to polish trivex lens. I can not seem to get a good polished edge on trivex no matter what we try. any help from the brains in the family would be greatly appreciated. thanks

PPG Offers Trivex Edging Tips on Video — PPG Industries, in conjunction with eight leading equipment manufacturers, has produced an education CD to serve as a guide on optimal edging techniques for lenses made from Trivex.
“The Trivex Material Edge” provides information and video demonstrations on how to maximize edging results from A.I.T. Industries/Indo, Briot, Gerber Coburn/ Essilor, Lab-Tech, Satisloh, National Optronics, Santinelli International/Nidek and Topcon America/ODI. The CD will be the first in a series of educational tools PPG is planning to roll out, which will serve as an “A-to-Z” guide for achieving the best possible results with Trivex, according to Christine Camsuzou, PPG general manager of optical materials. To obtain a copy of “The Trivex Material Edge” CD, contact Robin Snyder, marketing manager, optical material and coatings, PPG Industries at (724) 325-5168, or rsnyder@ppg.com.

http://www.2020mag.com/index.asp?page=3_524.htm

This is an excellent video on processing TRIVEX. Available at no cost through PPG Industries. Get your copy today. Tell them Cherry Optical sent you.

Adam

[Atsuo]

Look for an edger that has a separate cycle for Trivex for starters. Ensure it goes through a single rotation "dry" to remove the swarf that may have occured. They single dry-rotation "snips" that swarf off and then allows the lens to be polished "wet" afterwards. Go around tradeshows and ask manufacturers to polish a Trivex lens for you. You'll be surprised that very few do, but some do a great job.:)