When I twist a spur off, there is a sharp spur beneath the old spur sheath. If I cut the newly exposed spur straight across, how will that affect the future spur sheath that is bound to form?
Dont cut the newly exposed spur. When trimming the spur you are cutting off the outer spur right about where the inner spur ends. The spur will keep growing and will need trimmed again down the road. problem with twisting the outer sheath off you still have a very sharp spur sticking out, just not as long. That is why I prefer trimming to twisting.