• Important Executive Director Announcement from the NAWCC

    The NAWCC Board of Directors is pleased to announce that Mr. Rory McEvoy has been named Executive Director of the NAWCC. Rory is an internationally renowned horological scholar and comes to the NAWCC with strong credentials that solidly align with our education, fundraising, and membership growth objectives. He has a postgraduate degree in the conservation and restoration of antique clocks from West Dean College, and throughout his career, he has had the opportunity to handle some of the world’s most important horological artifacts, including longitude timekeepers by Harrison, Kendall, and Mudge.

    Rory formerly worked as Curator of Horology at the Royal Observatory, Greenwich, where his role included day-to-day management of research and digitization projects, writing, public speaking, conservation, convening conferences, exhibition work, and development of acquisition/disposal and collection care policies. In addition, he has worked as a horological specialist at Bonhams in London, where he cataloged and handled many rare timepieces and built important relationships with collectors, buyers, and sellers. Most recently, Rory has used his talents to share his love of horology at the university level by teaching horological theory, history, and the practical repair and making of clocks and watches at Birmingham City University.

    Rory is a British citizen and currently resides in the UK. Pre-COVID-19, Rory and his wife, Kaai, visited HQ in Columbia, Pennsylvania, where they met with staff, spent time in the Museum and Library & Research Center, and toured the area. Rory and Kaai will be relocating to the area as soon as the immigration challenges and travel restrictions due to COVID-19 permit.

    Some of you may already be familiar with Rory as he is also a well-known author and lecturer. His recent publications include the book Harrison Decoded: Towards a Perfect Pendulum Clock, which he edited with Jonathan Betts, and the article “George Graham and the Orrery” in the journal Nuncius.

    Until Rory’s relocation to the United States is complete, he will be working closely with an on-boarding team assembled by the NAWCC Board of Directors to introduce him to the opportunities and challenges before us and to ensure a smooth transition. Rory will be participating in strategic and financial planning immediately, which will allow him to hit the ground running when he arrives in Columbia

    You can read more about Rory McEvoy and this exciting announcement in the upcoming March/April issue of the Watch & Clock Bulletin.

    Please join the entire Board and staff in welcoming Rory to the NAWCC community.

Clockmakers Brass

wgriffin

NAWCC Member
Oct 22, 2018
9
0
1
Niskayuna, NY
Country
Team,
I am looking for some help in finding sources for clock makers brass.
Specifically, I am looking for 3/16" plate made of half-hard leaded-brass (similar to CDA353). I have looked into Online Metals, which does have leaded brass but isn't very hard (~quarter hard, Rockwell B53), but it also seems to be fairly expensive ($200 for a 3/16" thick 12"x12" plate). It is even more on MSC. McMaster does have half-hard 353 at .15" 12"x12" for $100. But not sure how the thinner plate would affect the design...(I am planning to build WR Smith's single-train weight-driven skeleton wall clock and would need to review the design details more closely). i have also contacted a couple of metal supply companies, but they typically don't cut material and want to sell a 96" long sheet.
So for a reality check:
- Are there other places to order clock brass plates?
- Is the hardness super critical?
Thanks,
Wes
 

Allan Wolff

Moderator
NAWCC Member
Mar 17, 2005
697
67
28
Tulsa, OK
Country
Region
Wes,
I have had good luck with McMurray Metals. You will need to call them for pricing or to place an order. You will want the CDC353 Brass Sheet. Even with shipping and cut charges, I have found that their prices are lower than anyone else and their service has been great.
Allan
 

howtorepairpendulumclocks

Registered User
Dec 18, 2020
269
77
28
53
Country
Re hardness I suspect the clock will last a long time anyhow! Just a thought but you could make the plates with bushes (hard drawn wire bushes) so the hardness of the plate is immaterial? Also, unleaded is a pig to cut / machine, you want a bit of lead in there to make life easier. In the UK that is called CZ120. If you change the thickness of the plate you might change the length of the pivots accordingly. The thickness of the plate at the bearing surface should be pivot length minus end-shake.
 

wgriffin

NAWCC Member
Oct 22, 2018
9
0
1
Niskayuna, NY
Country
Wes,
I have had good luck with McMurray Metals. You will need to call them for pricing or to place an order. You will want the CDC353 Brass Sheet. Even with shipping and cut charges, I have found that their prices are lower than anyone else and their service has been great.
Allan
Allan,
Many thanks for the suggestion. I have e-mailed them today to see if they are willing do do the custom size cutting. Thanks again.
Weston
 

wgriffin

NAWCC Member
Oct 22, 2018
9
0
1
Niskayuna, NY
Country
Re hardness I suspect the clock will last a long time anyhow! Just a thought but you could make the plates with bushes (hard drawn wire bushes) so the hardness of the plate is immaterial? Also, unleaded is a pig to cut / machine, you want a bit of lead in there to make life easier. In the UK that is called CZ120. If you change the thickness of the plate you might change the length of the pivots accordingly. The thickness of the plate at the bearing surface should be pivot length minus end-shake.
Thanks for the suggestions. I had not thought much about using bushing material... that could work and then I could use any grade. But as you suggest and based on what I have read, I'll stick with the leaded brass. And good point on the plate thickness... I will have to review the design and check for other impacts/changes that I may have to account for in the various parts. I would hate to build myself into a corner.
PS. I have watched a couple of your videos and have learned quite a bit. Thanks!
 

wgriffin

NAWCC Member
Oct 22, 2018
9
0
1
Niskayuna, NY
Country
I bought some 3/16" 353 1/2 hard from Sequoia Brass and Copper. They have a website.
I used it for the plates on WR Smith Skeleton Clock.
Thanks Kim, I will give them a call as they do show reasonable sizes... although shipping 3k miles to NY might sting a little :)
 

Forum statistics

Threads
163,682
Messages
1,422,479
Members
85,042
Latest member
JRGerow
Encyclopedia Pages
1,101
Total wiki contributions
2,861
Last edit
Bread Upon the Waters by Tom McIntyre