After a break following the first trials of our 3D scanning project, work continued last week when Martin Devereux, Head of Digital, and Stuart, Philatelic, took three objects to UCL to be scanned by Mona Hess, our 3D specialist.
These were no ordinary objects, however. Stuart, our philatelic archivist and I took a flintlock pistol used to guard mail coaches, a handstamp used to cancel mail carried by the first airmail trial in 1911, and an iconic plaster cast of Her Majesty the Queen, sculpted by Arnold Machin. The Machin cast is recognised around the world as it has appeared on UK stamps since 1967.
Each of these items poses a serious challenge to current 3D digitisation techniques. Glossy surfaces and deep features mean that lasers do not work as effectively as with less shiny and less detailed subjects.
Mona spent over 3 hours scanning the plaster cast with the Arius 3D colour scanner, while Stuart and I, along with MSc student, Sarah Sifontes Duran, captured the geometry of the handstamp and flintlock pistol, using an infra-red scanner – a technique that Mona is pioneering. The aim of this work is to produce a set of techniques which can be combined quickly and at low-cost to produce accurate and detailed representations of objects in three dimensions.
Digitising the plaster cast of Her Majesty was the climax of the day and a highpoint for Mona. She has scanned many memorable objects over the years and the Machin cast is certainly a significant addition to her list.
Once the cast had been scanned, the remainder of the day saw the scanning of the flintlock pistol and handstamp using the Arius colour scanner.
Mona is working to refine the results of the trials and further work will be undertaken over the summer as the project moves forward.
-Martin Devereux, Head of Digital