No more cracked screw holes on rimless polycarbonate mountings or nylon grooves

This unique new product will save the optician or optical lab the trouble re-doing or replacing Polycarbonate lenses on rimless frames because they cracked or crazed

The drill used to make holes specially on polycarbonate lenses can rip the material and when overheating can initiate a partial melt which can start a slow crack or crazing process.

How to Treat a Lens

After drilling and just before mounting the lenses apply a simply a drop of Drillseal into the screw hole. Any rips created while drilling through the action  of the drill as minute little crack or overheating will seal up and dry instantly.

Result

The rimless frame will perform better as any crazing or cracking has been eliminated. The chance of having to do warranty replacement are reduced to just about zero.

Recommended  by  major manufacturers

Vision Ease, Polycarbonate mounting instructions :

 Click here for ►  http://www.vision-ease.com/Portals/VisionEase/Specifications/LensDrillRimlessMounts.pdf

All About Polycarbonate

 Click here for ►  Polycarbonate physical properties

Discussion on Poly cracking at  optiboard.com

Polycarbonate does have some drawbacks about crazing and stress cracks, but if you do not investigate all avenues of preventing those successfully, you have missed an important point.

I have noticed these problems a few years back, and worked on it for quite a few month. Finally I found a solution, a chemical mix that dissolves and fuses the microscopic cracks coming from grinding and drilling the material back together. If that is done properly without much work nor cost you will be without any of the problems you have been describing.

If you condemn a material that might crack because you use a drill that overheats because it is dull and rips the material or microscopically damages the groove or edge, because there is not enough cooling when grinding, you should also check your tools or take preventive measures as sealing any possible microscopic irregularities that are not even visible.

There is a multitude of optical retailers as well as many laboratories that have joined the converted rank of Poly crack sealers to sell a product that defies the opinion of this thread "Replacing poly" .

 Copyright OMS 2012