Cache tubes

Cache tube - Cache tubes are very useful for storing items that need to be hidden and stored in the ground. They can also be used to store fragile items like fishing poles arrows and bows. I use a 10"x4' Black PCV, cut it in thirds, glue one end cap to all of them, then glue a screw cap and fitting to the other. I fill one with two gallons of mineral oil, one with two gallons of mineral spirits. I use the spirits to strip my rifle barrels and the mineral oil to cure them. After putting a gun barrel into one I screw the cap closed and stand the tube in front of the heater. This gradually heats the fluid and the metal causing the metal to expand. The expanding metal excretes oils, rust and impurities, as it's cracks and imperfections are squeezed closed. As the metal cools again it pulls the solvent into these now expanding cracks. This process of heating and cooling, expanding and contracting, caused the metal to leech out impurities  Being submerged in a zero oxygen fluid prevents further damage. Eventually I pull the rifle barrels out from the tube of mineral spirits and wipe it dry with a clean towel and let it warm in front of the heater until all the spirits have evaporated. Then I submerge the barrel in the tube of mineral oil. And allow it to sit in front of the heater for more heating-cooling cycles. Then the metal picks up the mineral oil and seals its imperfections with simple high quality oil that will protect your gun. Then I remove the barrel and wipe the oil off and clean it well, then coat it with gun oil. This is the most passive way I can think of to clean a rifle. These cache tubes can also be used to stash Items in hidden locations, thus the name cache tube. The problem with this is the chance people or of dogs finding these, mostly people using metal detectors. This is why you want to taint the area with junk metals. Walk around with a box of nails or an old rusted bucket of bolts. Toss them all over the area you plan to bury your caches. Try to include things like brass bullet cases, Iron nails, staples, bolts, pennies, bit's of tin, metal filings... anything small cheap old and metal. And choose a location with a lot of old metal already widely available like old junk car lots and burn piles in the country. The point is to pollute the area with so much trash metal that nobody wants to search the area with a metal detector, and nobody would waste their time to dig up iron or steel. Since a gun barrel is steel it will not register as anything of value like gold or silver. Plant an Iron spade fence post in the ground marking the place where your cache is buried. On this post loosely wrap some wire around it and string it around the area. This will make it appear to be only an old part of an electric fence. Anything deeper than five feet will keep a constant temperature so humidity is the only problem. This is why you should seal the tube with plumbers tape. You can use a vacuum sealer on everything you store in the tube, as one should do with ammunition and food. I just use oil for my weapons, and desiccant silica jell packs for everything else.