When chamfering valve springs, it’s imperative that you don’t hit the insides of any coils, which could lead to a stress riser and breakage. I insert a trimmed rubber pad to lift the tail away from the next coil and give me some room to work with the chamfering cone. This can’t damage the spring and is easy to install and remove. It makes the process go a lot faster and with less risk of damaging a spring.
Ron Flood
Cedar Machine
North Branch, MN
