Post
by Philip Tom » Tue Feb 27, 2007 12:11 am
I prefer the magnolia or clove oils used by the Japanese because they are more "gentle" to the wood scabbards than the petroleum based oils commonly available. I've noticed that the petro products (which include "3 in 1" and the various lubes for things like guns or sewing machines) tend to soften and even rot wood that becomes soaked with these substances. For example, military rifles are commonly stored vertically in racks, and soldiers have been told for generations to keep them well oiled. On older specimens, the oil has flowed down the barrels to the breech area, and goes right into the grain of the wood of the stock at the rear of where it is hollowed out to accept the metal parts. First, the wood darkens around screw holes and at the contact point with the metal, all around where the trigger and breech-block are. As years go by, the wood softens, and excessive oiling will eventually cause it to deteriorate into a black, spongy, oil-soaked mass where the grain of the wood has absorbed the most of it.
A properly-made wooden scabbard for a sword or saber is supposed to support and hold the blade firmly at the forte and tip when it is fully sheathed. The point is not supposed to "wag" back and forth when the sword is seated up to the hilt in the scabbard. However, when the wood inside the channel deteriorates (and here, the wear from friction is a factor but I've also noticed damage, on old scabbards, from over-oiling), the fibers tend to soften and slough away just as what happens to the gun stocks.
When oiling any iron or steel object, all you need is enough to coat the entire surface without putting so much that it drips off. Anyway, martial artists are supposed to practice regularly with their weapons, so there should be no problem with regular inspection and cleaning. Overkill on the oil is no substitute for regular and reasonable maintenance.
Nonetheless, if given the choice I would choose a preservative that has the mildest effect on the non-metallic parts, because a holistic approach is best for optimal long-term durability of the entire sword.
Phil