Unearthing the Past: A Guide to Cleaning and Preserving Metal Detecting Finds
Cleaning and Preserving Finds: A Guide for Metal Detectorists
Metal detecting is a thrilling hobby that allows enthusiasts to unearth fascinating artifacts from the past. Whether you’re a seasoned detectorist or a beginner, it’s essential to know how to properly clean and preserve your finds. Cleaning not only enhances the visual appeal of your discoveries but also ensures their longevity. In this guide, we will explore various cleaning methods and preservation techniques for different types of finds.
1. Identifying Materials:
Before diving into cleaning methods, it’s crucial to identify the materials used in crafting the artifact. Common metals found are iron, copper, bronze, silver, gold, and aluminum. Additionally, there might be non-metallic components like glass or pottery present.
2. Basic Cleaning Techniques:
For most metal objects such as coins or jewelry with light dirt accumulation, gentle cleaning can be done using mild soap and water solution. Avoid abrasive cleaners as they can damage delicate surfaces or remove patina that adds character to an item.
– Fill a basin with warm water and add a few drops of dish soap.
– Gently scrub the object with a soft-bristle toothbrush.
– Rinse thoroughly under running water.
– Pat dry using a soft cloth.
Remember never to soak items made of iron or steel for extended periods as they may rust when exposed to air once again.
3. Removing Stains from Coins:
Coins often accumulate stains over time due to exposure to elements like soil minerals or corrosion processes. Here are some techniques specifically designed for coin cleaning:
a) Lemon Juice Method:
Lemon juice contains citric acid that acts as a natural cleaner without causing harm if used moderately.
– Squeeze fresh lemon juice into a container.
– Immerse the coin in lemon juice for 15 minutes.
– Gently scrub with a soft toothbrush if required.
– Rinse well under running water after removing all traces of dirt/stains.
– Pat dry using a soft cloth.
b) Vinegar and Salt Method:
Vinegar is mildly acidic, and when combined with salt, it creates an effective cleaning solution for coins.
– Pour white vinegar into a container.
– Add a teaspoon of salt and mix well until dissolved.
– Immerse the coin in the mixture for 5 minutes.
– Rinse thoroughly under running water to remove all traces of vinegar/salt.
– Pat dry using a soft cloth.
Note: These methods should be used sparingly on valuable or ancient coins. Seek professional advice if unsure about their application.
4. Cleaning Metal Artifacts:
For larger metal artifacts like tools or relics found during your excavation adventures, additional steps may be necessary due to heavy dirt accumulation or rust formation:
a) Mechanical Cleaning:
Mechanical cleaning involves removing dirt manually by gently scraping away debris with non-abrasive tools like wooden toothpicks or plastic dental picks. Be cautious not to scratch the item’s surface while dislodging stubborn dirt particles.
b) Electrolysis:
Electrolysis is an effective method for removing rust from iron and steel objects but should only be attempted under proper supervision due to safety concerns.
– Create an electrolyte solution by mixing one tablespoon of washing soda (sodium carbonate) per gallon of warm water in a plastic container.
– Attach the positive electrode (anode), typically made of stainless steel, to the artifact you want to clean.
– Place both electrodes into the electrolyte solution without them touching each other.
– Connect the negative electrode (cathode), usually another piece of stainless steel, to a battery charger set at low voltage (e.g., 6 volts).
– Let the process run for several hours while monitoring regularly until desired results are achieved.
– Rinse thoroughly after removal from electrolyte bath and pat dry using a soft cloth.
Remember that electrolysis can darken certain metals; therefore, it is not recommended for artifacts with significant historical value or those made of precious metals.
5. Preservation Techniques:
Once your finds are cleaned, preserving them correctly will ensure their longevity and prevent further deterioration:
a) Applying Wax:
After cleaning metal objects, a thin coat of microcrystalline wax can be applied to provide protection against corrosion and slow down the aging process. Apply the wax using a soft cloth in gentle circular motions, then buff away excess wax once dry.
b) Display Cases:
For delicate items like coins or jewelry, investing in display cases with clear UV-resistant covers helps protect them from dust, moisture, and light damage. Ensure that the cases are made from materials free of acidic components that could harm your finds.
c) Proper Storage:
Store cleaned and preserved artifacts in acid-free archival-quality boxes or coin holders to safeguard them from environmental factors such as humidity and temperature fluctuations. Avoid storing different types of metals together as they might react chemically over time.
In conclusion, cleaning and preserving your metal detecting finds requires careful consideration of the object’s material composition along with appropriate techniques tailored to each specific type of artifact. Whether you’re dealing with coins, jewelry, tools or relics – following these guidelines will help maintain the integrity and beauty of your discoveries for years to come while respecting their historical value. Happy hunting!