There is no way in the world that my wife will let me heat up a stinky, old surplus rifle in her oven, to remove cosmoline. This has forced me to reach into my prepper bag o’ tricks to come up with another solution Today I decided to try to use solar oven technology to remove cosmoline from C&R Firearms.
Remove Cosmoline with a Solar Oven
The great thing about buying C&R firearms is that some countries used to dip the entire firearms into this thick, nasty grease, called Cosmoline!
If you’ve ever had to deal with Cosmoline, then you already know that everyone has a trick or method to get it out of the wooden parts (stocks, grips, etc) and off the metal.
There is no way in the world that my wife will let me heat up a stinky, old surplus rifle in her oven, to remove cosmoline. This has forced me to reach into my prepper bag o’ tricks to come up with another solution. I decided to remove Cosmoline with a Solar Oven.
I like to use a gentle heating (around 160°F), but how does one generate heat? Some easy ideas come to mind: The oven or a car sitting in the sun.
Let’s think about the oven. It’s in the house. My wife is also in the house. My wife uses the oven. The oven is NOT going to happen.
Now we consider a hot car parked in the sun. I’m not real fond of leaving a firearm in a car parked in my driveway or along the street, there are just to many chances for theft or unnecessary craziness to occur. Another thing to consider would be that if I spilled cosmoline in the car, I’d never be able to get it all cleaned up, ever.
This left me in a bit of a conundrum. I could buy a heat gun or some form of heater, but again, we’re back to money.
Then it hit me. I could use the box that the firearm came in, add some foil and plastic wrap and set it out in the sun. It should heat up like a solar oven or like a car, parked in the direct sun.
Now it’s time to create my “solar oven“. I took the rifle box and cut off one of the sides. It had another cardboard sleeve inside so I cut that and created an insert that I could line with foil. That went into the box.
Time to insert the UNLOADED rifle into the solar oven and cover the opening with clear plastic wrap!
Once it was out in the sun, it didn’t take long for the cosmoline to start running down to the bottom of the “oven”.
I think it was 15 minutes before I started to see puddles in the bottom of the box.
Here’s a short video I did. You can see the wood sweating out the cosmoline.
Typically it’s best to take off the wood and warm it separately, but I wanted to do it all at once to test this process out. Once you have the cosmo running off the firearm, you’ll need to take it out and wipe it, then let it cook some more. Repeat this process as required.
Be careful handling your firearm, it will be very very hot when it comes out of the solar oven.
When you think you have all the cosmoline out, you’ll need to fully disassemble the firearm and use a good gun cleaning kit to finish the thorough cleaning.
Once you get done, you may not have a pretty gun, but you should have a fully functional firearm.
Remove Cosmoline with a Solar Oven in the great outdoors, saving energy and keeping the mess and smell outdoors.