Unearthing the Past: A Comprehensive Guide to Cleaning and Preserving Metal Detecting Finds
Cleaning and Preserving Finds: A Comprehensive Guide for Metal Detecting Enthusiasts
Introduction:
Metal detecting is an exciting hobby that allows enthusiasts to uncover hidden treasures from the past. Whether you’re a beginner or an experienced detectorist, one crucial aspect of this hobby is properly cleaning and preserving your finds. Cleaning not only enhances the aesthetic appeal of your discoveries but also ensures their longevity. In this post, we will delve into the various techniques and best practices for cleaning and preserving different types of metal detecting finds.
1. Understanding Different Metals:
Before diving into the cleaning methods, it’s important to have a basic understanding of different metals commonly found while metal detecting. Some common metals include iron, copper, silver, gold, aluminum, and bronze. Each metal requires specific cleaning techniques to prevent damage.
2. Inspecting Your Finds:
After unearthing an item with your metal detector, take some time to inspect it before proceeding with any cleaning methods. Assess its condition – if it appears fragile or deteriorated, consult a professional conservator before attempting any restoration work yourself.
3. Dry-Cleaning Techniques:
In many cases, dry-cleaning can be sufficient for removing dirt and debris without causing harm to delicate artifacts or damaging patinas on older items. Use soft-bristle brushes like toothbrushes or paintbrushes to gently remove loose soil particles from your finds.
4. Water Bath Method:
For non-ferrous metals like copper or brass objects that are heavily soiled or corroded, a water bath technique can be effective without risking damage to the artifact’s surface.
a) Fill a plastic container with warm water (not hot) and add mild dish soap.
b) Gently place the object in the soapy water.
c) Allow it to soak for several hours but avoid leaving it overnight.
d) After soaking time has elapsed, use a soft brush or toothbrush to remove remaining dirt gently.
e) Rinse the object with clean water and pat it dry using a soft cloth or towel.
5. Electrolysis:
Electrolysis is an advanced cleaning technique suitable for heavily corroded iron artifacts. This method involves passing a low-voltage electrical current through a solution to remove rust without damaging the object.
a) Set up an electrolysis tank by filling a non-metallic container with warm water and adding washing soda (sodium carbonate).
b) Place the iron artifact in the tank, ensuring it’s fully submerged but not touching any metal.
c) Connect a battery charger’s positive lead to the artifact and the negative lead to a sacrificial piece of metal, like steel rebar.
d) Turn on the charger, ensuring that both leads are secure and submerged.
e) Leave it running for several hours or overnight until you notice rust particles accumulating around the sacrificial metal piece.
f) Once complete, remove the artifact from the tank, rinse it thoroughly with clean water, and promptly dry it.
6. Cleaning Coins:
Coins require special care due to their value as collectibles. It’s crucial not to damage their surfaces or markings during cleaning.
a) Begin by gently rinsing coins in lukewarm water without any soap or chemicals.
b) If dirt persists, place them in distilled water for 24-48 hours while occasionally agitating gently.
c) After soaking, use cotton swabs or soft brushes to remove remaining debris carefully.
d) Never attempt aggressive scrubbing or harsh chemical treatments on coins as they can cause irreparable damage.
7. Preserving Finds:
After cleaning your metal detecting finds, preserving them properly is essential for long-term enjoyment and protection against future deterioration.
a) Apply microcrystalline wax: For metallic objects susceptible to corrosion like iron relics or copper artifacts that have been cleaned thoroughly but still show signs of vulnerability, applying microcrystalline wax can provide an additional layer of protection. Follow the manufacturer’s instructions but generally, apply a thin layer and buff it gently for an even coating.
b) Store in proper containers: Use acid-free archival-quality storage solutions like coin holders or plastic sleeves to protect your finds from environmental factors such as humidity, dust, and sunlight.
c) Regular maintenance: Periodically inspect your collection for any signs of deterioration or corrosion. If necessary, repeat cleaning processes to prevent further damage.
Conclusion:
Cleaning and preserving metal detecting finds is a crucial aspect of the hobby that ensures the longevity and enhances the aesthetic appeal of your discoveries. By understanding different metals, using appropriate cleaning techniques, and following proper preservation methods, you can maintain your artifacts’ value while enjoying them for years to come. Remember always to exercise caution when working with delicate items or seek professional advice if unsure about restoration efforts. Happy hunting!