Skip to content
  • FR
FR
  • About us
    Building, illuminated glass towers on either side of an old, square, stone building.

    About us

    We're here to help you understand what the Bank of Canada does and how it matters to you.

    About the Bank of Canada

    Find out what the Bank does, who runs the Bank and how it is separate from the political process.

    Connect with us

    We’d love to hear from you! Contact us by email, phone or mail—or join us on social media.

  • Visit

    Visit

    • Plan your visit
    • Accessibility and special needs
    • Code of conduct
    • COVID-19 protocols

    Sensory Sundays

    We’re turning down the lights and the volume for our sensory-sensitive visitors—explore the Museum using more than eyes and ears.

    Connect with us

    We’d love to hear from you! Contact us by email, phone or mail—or join us on social media.

  • Explore

    Exhibitions

    • Permanent exhibition
    • Special exhibitions
    • Travelling exhibitions
    • Past exhibitions

    Blog

    Collection

    • About the Collection
    • Collection Services
    • Canadian Bank Notes Series
    • Search the Collection

    New acquisitions—2024 edition

    Bank of Canada Museum’s acquisitions in 2024 highlight the relationships that shape the National Currency Collection.

  • Learn

    Learn

    • Activities and games
    • Education blog
    • External resources
    • Lesson plans
    • School programs
    • Video discussion guides
    • Upcoming webinars

    Entrepreneurship: Kids edition

    Learn from the experiences of successful young entrepreneurs, then create your own business model and pitch your business.

    You are the economy

    A set of six lessons to explore economics with your students.

  • Home
  • The Museum Blog

Welding with Liquid

By: Stephanie Shank


April 25, 2019
Share this page on Facebook
Share this page on Facebook
Share this page on X
Share this page on X
Share this page on LinkedIn
Share this page on LinkedIn
Share this page on Google Classroom Created with Sketch.
Share this page on Google Classroom
Share this page by email
Share this page by email

Broken printing plates made whole

Gluing metal? You would imagine that a broken metal object would need to be welded back together. Not necessarily. These damaged printing plates were made whole using glue—though not the stuff you used in grade three.

A treasure trove of artifacts

Having recently blogged on the conservation of a 19th century printing press, it seemed appropriate to write a blog on the conservation of printing plates that may very well have been used on this press. In May 2013, the Museum acquired for its National Currency Collection more than 650 engraved steel dies (printing plates) from the British American Bank Note Company. (Read more about this acquisition.)

envelope with an engraving printed on a label

The print dies were in envelopes with sample prints glued to the front. Nobody had much of an idea of what condition the plates themselves were in. Die, printing, British American Banknote Co., Canada, 1905

But, we couldn’t place the dies in storage straight away. There were assessments to be made, labels to be detached and a little clean-up was called for. Each die was wiped down with mineral spirits and soft cotton swabs to remove a dark, greasy substance that covered the surfaces—evidence of their past use as security printing plates. During this cleaning process, we discovered that eight dies were broken in half, likely from past printing activity. After further evaluation, we decided to repair the breaks.

printing plate broken in half

This engraving of an early coat of arms for the City of Ottawa highlights labour alongside government. Die, printing, British American Banknote Co., Canada, 1875

printing plate broken in half

Prior to treatment, the plate shows a clean break. Die, printing, British American Banknote Co., Canada, 1873

Conserving the plates

Artifact preservation is the non-invasive act of minimizing and preventing future damage or deterioration. Artifact conservation has the same goal but with the addition of hands-on treatments such as cleaning and repairing.

In heritage conservation, broken metal objects can be reassembled with an adhesive most commonly used for repairing glass and ceramics. This adhesive, known as HXTAL, is a two-part epoxy resin which, through a chemical reaction, hardens after mixing. It works well with dense materials as it creates strong, tight bonds and has the added benefit of neither swelling nor discolouring over time.

bottles of epoxy glue

HXTL is called “hextal” by conservators. Unlike the two-part epoxy from the hardware store, HXTAL is a very thin liquid.

metal plates held in wooden clamps

No, the plates weren’t taped together; just held together while the adhesive cured.

Each die was reassembled, held together with thin strips of painter’s tape and then placed upright in clamps. Small drops of HXTAL were then applied along the break with the tip of a wooden stick. Capillary action then draws the glue into the break. The next day, any remaining adhesive was removed with swabs and wooden sticks lightly dampened with acetone. This is important because after 24 hours, HXTAL will become too hard to be removed without the potential of damaging the object. The dies were then left in the clamps for an additional week until the adhesive had fully cured. The final step was to create custom mounts for each die to ensure they are properly supported while in collection storage.

2 printing plates

The plates may now be re-assembled, but could never be used for printing again.

It is both our pleasure and our duty to preserve items such as these dies for the future. They are a glimpse into our economic and social history as well as into printing traditions that reach back nearly 600 years.

We want to hear from you! Do you have an idea for a blog post you’d like to see?
Content type(s): Blog posts
February 26, 2025

New acquisitions—2024 edition

By: David Bergeron, Krista Broeckx


Bank of Canada Museum’s acquisitions in 2024 highlight the relationships that shape the National Currency Collection.
Content type(s): Blog posts
February 11, 2025

Money’s metaphors

By: Phillipe Audet-Cayer, Graham Iddon, Patricia Marando


Buck, broke, greenback, loonie, toonie, dough, flush, gravy train, born with a silver spoon in your mouth… No matter how common the expression for money, many of us haven’t the faintest idea where these terms come from.
Content type(s): Blog posts
August 6, 2024

Treaties, money and art

By: Krista Broeckx, Frank Shebageget


Photo, collage, a photograph and a drawing of an elderly White man in a high collar and old-fashioned suit.
The Bank of Canada Museum’s collection has a new addition: an artwork called Free Ride by Frank Shebageget. But why would a museum about the economy buy art?
Content type(s): Blog posts Subject(s): Arts, History
July 16, 2024

Rai: big money

By: Graham Iddon


An item is said to have cultural value when it can be directly associated with the history, people, beliefs or rituals important to a society. It’s the same with a rai—its value can be greater depending upon who authorized it, who carved it and who subsequently owned it.
Content type(s): Blog posts Subject(s): Economy, Geography, History Grade level(s): Grades 11 and 12 / Secondary 5 and CEGEP
April 18, 2024

Lessons from the Great Depression

By: Graham Iddon


A welfare coupon and piece of stock ticker tape over a 1930s black and white photo of unemployed men gathering to protest.
What the stock market crash of 1929 did was starkly reveal the weaknesses of economic systems that had evolved from the unregulated capitalism of the late 19th century.
Content type(s): Blog posts Subject(s): Financial literacy, History Grade level(s): Grade 09 / Secondary 3, Grade 10 / Secondary 4, Grades 11 and 12 / Secondary 5 and CEGEP
March 25, 2024

Welcoming Newfoundland to Canada

By: David Bergeron


Newfoundland’s entry into Confederation marked the end of an era when Canadian provinces issued their own coins and paper money.
Content type(s): Blog posts
  • 1
  • 2
  • 3
  • 27
  • Next »
Go To Page

30 Bank Street
Ottawa, ON
K1A 0G9, CANADA
613‑782‑8914

  • Things to do

  • Plan your visit
  • Find educational resources
  • Search the Collection
  • Connect with us
  • Things to see

  • Canadian bank notes
  • Exhibitions
  • Blog
  • Videos
  • Things to know

  • Accessibility and special needs
  • Careers
  • Code of conduct
  • COVID-19 protocols
  • Privacy
  • Social media
●●
Bank of Canada Museum

Visit the Bank of Canada web site ›

We use cookies to help us keep improving this website.

Accept and continue