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A pilgrimage to the discovery of titanium

May 31, 2021

Like many of you, we have a long history working with titanium, in our case for making jewelry and wall art.


In 1990, we were honored with a commission to make a plaque of titanium commemorating the discovery of titanium in Cornwall, UK. We were given some materials by the Titanium Development Association (now the International Titanium Association ) to help design the plaque, including a copy of a painting of the discoverer Rev. William Gregor. We included a glass vial of ilmenite (from which titanium can be refined), titanium sponge, an ingot of titanium, and some mill products.

Our commemorative plaque about titanium.

Gregor found the titanium near the parish church of Manaccan and, as he was visiting the church’s rector, Richard Polwhele, the Titanium Development Association presented the commemorative plaque to that church.


Since 1990, we have asked several people to visit “our” plaque when they visited UK but we didn’t realize how far Manaccan is from the usual UK tourist destinations. Then, in 2007, our daughter began a year’s internship in London and we finally had the needed push to visit the plaque and the location where titanium was discovered.



Here is a map showing Manaccan’s location:

Manaccan's location in Cornwall, UK.

In Falmouth, we met local historian and author Derek Carter, who, along with his wife Susanne, acted as invaluable guides in Manaccan and the area called “The Lizard” which includes the southwestern part of Cornwall. Their beautifully detailed tour included fascinating information about U.S. forces in Cornwall during World War II, when Cornwall was called the 49th state due to the overwhelming number of American serviceman.



We took a beautiful drive along the coast, up the Helford River to Gweek, on to pick up Susanne at their home in St. Martin, and then to the church at Manaccan.

The church at Manaccan.

For many years we thought the church in Manaccan was Rev. Gregor’s church but in fact, Rev. Gregor was vicar of Creed parish church. However he paid frequent visits to his friend Rev. Polwhele who was vicar at the Manaccan church. It was during one of these visits that Rev. Gregor discovered some unusual black sand in the water of Tregonwell Mill, near the church. Upon detailed analysis he realized it was a new mineral and named it Manaccanite. A few years later, M. H. Klaproth also discovered titanium in Germany, later realizing it was the same material Gregor had found and crediting Gregor with the original discovery. But Klaproth’s name for the material — titanium — is the name that stuck.



The Manaccan church was begun in the 13th century and has many lovely Norman details. Here I am (on the left) with Derek outside the entrance, across from what used to be the vicarage:

Chris and Derek in Manaccan.

It was a thrill to see our plaque displayed in such a historic setting and, given the abundance of historic objects in this church, made us feel we had been “relicized.” At one point the plaque was on the wall; now it is on a window ledge:

Titanium plaque on the window ledge.

Here I am, with Sandy, reunited at last with the plaque:

Chris and Sandy Boothe with the titanium plaque.

This is the actual location where Gregor found the sand which contained titanium. Here I relive the discovery:

Re-enacting the discovery of titanium.

On the front of the mill is another titanium plaque:

A second plaque about the discovery of titanium.

Finally, here I am with Derek, discussing whether the correct date of discovery is 1790 or 1791:

Chris and Derek discuss titanium.

Keep on etching!


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We have a number of important changes to announce, effective immediately.
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Titanium anodizing baths. Image courtesy IPEC Global.
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Here is an interesting method for an extractive coloring technique using Multi-Etch. Perhaps you’ve gone beyond that color you wanted when anodizing titanium or niobium, i.e., the voltage you applied was too high and the coloration needs correcting. You wanted a nice yellow but hit the pink fuchsia range above it. Rather than completely erasing the color, it is possible to Multi-Etch the anodized item and work backwards to the color you wanted. It takes some practice and skill working with this technique but it can produce the colors you're after. A quick demonstration:
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Strips of anodized titanium using room-temperature Multi-Etch.
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Copyright © Mark Fergus, used with permission
28 Sep, 2020
Sometimes it’s handy to prepare a titanium piece with Multi-Etch and then protect the piece in a way that allows you to set it aside and anodize later. One simple way is to Multi-Etch the piece, rinse, and then store in a tank of DI or distilled water. We’ve found this lasts at least 2-3 days, and probably longer. A second way is to Multi-Etch and then “base coat” your titanium part with 8-10 volts. Those parts can then be stored dry and the base coating will protect the piece for a long time. We’ve stored pieces that way for years and been able to anodize them in the same brilliant colors we can produce when we are working with freshly Multi-Etched pieces. The only drawback with base-coating is that there will be a light tan on the piece, so if you need part of the piece to remain the natural color of titanium, base coating won’t work for you. A third way that works on flat pieces is to Multi-Etch the piece and then cover and apply anodizers’ tape on the flat piece, burnishing thoroughly to make sure you cover the whole piece completely. You should cut the tape big enough to fold over the edges. The concept with these three methods is to prevent the formation of the oxide layer that Multi-Etch is designed to remove. Happy anodizing!
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Since Multi-Etch is not as aggressive as hydrofluoric acid, it excels in removing amounts of titanium as thin as fractions of a micron. This allows for precise removal of material that is difficult to achieve with the blunt action of hydrofluoric acid.
By Esteban Rovic Dela Rama 20 Apr, 2020
Do you find yourself with extra time on your hands? This could be the perfect opportunity to investigate Multi-Etch. We have a lot of information on our website. If you've been thinking about anodizing titanium or bringing the process in-house, give us a call 928-634-5307 or email info@multietch.com. We are here to help!
By Web Act 10 Mar, 2020
Chris and Sandy Boothe began their exploration into titanium when they first used it to make jewelry in the mid-1970's. After joining the Jerome (AZ) Artists Cooperative Gallery in 1999, they added titanium wall art. They wanted to make images of the buildings in Jerome, many of which were built in the late 1800's. Along the way they added outdoor images of the Sedona landscape. Their first attempts weren't always what they wanted--they needed more definition around the important parts of the images. So, they investigated a masking material called Press-n-Peel Blue Transfer Film . They start by taking photos and then manipulate those photos in Photoshop until they have images that are black and white; gray doesn't work that well with this technique.
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