Chainsaw Repair

Info from @Grandedog

Nikasil is only about .010 - .012 thick. Chrome is harder and also more difficult to do correctly. Chrome doesn't bond as well as nikasil. If you look at cross sections of cylinders under an electron microscope, chrome has a very defined line where it bonds to the aluminum. A cross section of nikasil blurs the line and, shows the nikasil actually impregnating the aluminum cylinder. This is one of the main reasons why chrome will flake and nikasil won't. Chrome cylinders are more likely to fail with port mods because you expose the edge of the chrome.
Regards
Gregg