Windshield Repair Forum

The cps rating (as i have limited knowledge)is the level of viscosity? i wonder how that measurement works or is tested? for instance a star brake compared to a crack or bulls eye. the cps rating must be different for each?
thanks

Generaly, for star repairs you want the thinnest resin possible(to ease filling the legs), for bulls-eyes you want a resin that is the closest approximation to the glass as far as refraction index goes(due to the large surface area to prevent distortion), meaning slightly thickerj. Cracks require a resin that has low shrinkage, high flexability, and superior bonding traits. This is usually acomplished with a relativly thick resin, the thicker resins have are "purer", meaning they are less diluted, or thinned. Being less diluted they have less shrinkage. Again these are generalities, each company has its own resins, and theories concerning thickness of resins, the above are mine.

Enjoy

thanks Yvan. the higher the cps the thinner the resin? and cps stands for ? tryed finding this on the forum but no luck I'm sure its in the achieves some where.

Jim

The higher the number the thicker the resin. CPS is short for Center PoiSe which is a unit of measure that is taken using a brookfield type viscometer(a controlled amount of liquid is forced through a standard sized opening, the time that it takes to evecuate the material gives us the thickness.

Thanks

For more info on CPS (not pertaining to windshield repair necessarily):

http://www.liquidcontrol.com/etoolbox/viscosity.aspx

Thanks for the information. neat stuff. and the liquid control site was real informative. thanks yvan and jeff.