Editing Cutting fluid (section)

=== Rehbinder Effect ===
The [[Rehbinder effect|Rehbinder Effect]] is the reduction in strength of a materiel when a [[surfactant]], available in cutting fluids, is applied.<ref name="Chaudhari Rehbinder effect in ultraprecision">{{cite journal |last1=Chaudhari |first1=Akshay |last2=Soh |first2=Zhi Yuan |last3=Wang |first3=Hao |last4=Kumar |first4=A. Senthil |title=Rehbinder effect in ultraprecision machining of ductile materials |journal=International Journal of Machine Tools and Manufacture |date=October 2018 |volume=133 |pages=47–60 |doi=10.1016/j.ijmachtools.2018.05.009 }}</ref> Cutting fluid coats the cutting surface and reduces its surface energy, effectively weakening the material.<ref name="Chaudhari Rehbinder effect in ultraprecision"/> This decreases the force required to make cuts, the wear on tools, and the time required for machining processes.<ref name="Chaudhari Rehbinder effect in ultraprecision"/> The Rehbinder Effect is complicated, relying on the chemical properties and structures of both the cutting fluid and working material, and is therefore difficult for machinists to factor into the planning of machining processes. Experienced machinists may utilize "rules of thumb" or trial and error methods if they consider the effect at all.