The new coin can be seen here:
http://makeashorterlink.com/?Z1CA21F1D
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Steve Lelievre
Sent: Tuesday, May 16, 2006 9:40 PM
To: sundial@rrz.uni-koeln.de
Subject: Re: Sundial Motif to Be Featured on New
Has anyone tried hard anodizing? I used to use tefloned hard anodizing
on 6061 for mechanical parts subject to sliding. It has a duller,
grayer finish. I wonder how it does in the weather. I have regular
anodizing, water sealed, on my 12 (30 cm) bowstring equatorial. Fine
weather
Hi John,I tried some home-made anodising a few years ago, and I also used some pre-formed anodised sheets (with photoresist already applied). One item I made was an Equation of Time plaque which has been on the south wall of my house for about 4 years and still looks exactly as it did when I
I have a 1-inch thick 6061 machined aluminum tooling plate mounted in a
polar plane in a local desert at 4500 feet elevation where the UV
exposure is extreme. This plate was hard black anodized and Teflon
impregnated when fabricated 23 years ago. Today, it is still shiny and a
slightly lighter
Larry McDavid wrote:
I have a 1-inch thick 6061 machined aluminum tooling plate
mounted in a polar plane in a local desert at 4500 feet elevation
where the UV exposure is extreme. This plate was hard black
anodized and Teflon impregnated when fabricated 23 years ago.
Today, it is still shiny
Now if they'd just put the a.m. VI diametrically opposite the p.m. VI...
John B
-Original Message-
From: Robert Terwilliger [EMAIL PROTECTED]
To: 'Steve Lelievre' [EMAIL PROTECTED]; sundial@rrz.uni-koeln.de
Sent: Wed, 17 May 2006 09:48:08 -0400
Subject: RE: Sundial Motif to Be Featured
Can you tell I'm recently retired, with feverish mind? Or more
prosaically, I'm exploring fabrication methods now that I have more
time. But I digress.
I just recalled that our local park district has amongst its many
facilites a place to cast jewelry by lost wax. The hobbiest can do
gold
Now if they'd just put the a.m. VI diametrically
opposite the p.m. VI...
No need. On a circular plate that would be appropriate
for an equatorial dial but, for a horizontal dial the
VI-VI line on a circular plate is invariably not a
diameter. Look again at the original at...
Is there a formal taxonomy for sundials?
I like:
http://sundials.org/faq/
select:
6. What types of sundials are there?
I was thinking about my bowstring equatorial. It's also an
equinoctial, right? So what takes precedence? Seems like it would
help the new guy ('tis I) to be able to look
Now if they'd just put the a.m. VI diametrically opposite the p.m. VI...
John B
Noticed that, huh! Well, obviously you're not a fully licensed artist!
Styled after is the operative phrase here. Too bad, it would have made
a nice presentation gift!
--
Best wishes,
Larry McDavid W6FUB
Sorry to those to whom I inadvertently sent this. I meant to send it to the
list. I think I have now done so.
- Original Message -
From: Chris Lusby Taylor [EMAIL PROTECTED]
To: Robert Terwilliger [EMAIL PROTECTED]
Sent: Wednesday, May 17, 2006 4:55 PM
Subject: Re: Sundial Motif to Be
Hi John,
There is also the BSS Glossary by John Davis which defines many hundreds of
terms. The current edition, which also includes a lot of historical
information such as biographies, is available from the BSS in paper form.
The first edition is also on the BSS Web site: www.sundialsoc.org.uk.
John (D),
you talk about pre-anodised sheets with photoresist applied. is this
anodising applied or removed by a photographic process? how does it
work? how do you make the color change?
sounds like a very intresting material for our purposes!
hannes
--
hannes kühtreiber
[EMAIL
Hi all,
I tried the hard anodize with Teflon seal on my Elementary Dial
back in 1998. The dull finish is still like new except that it
has faded from the nice reddish gold toward gray now. It has
always had very nice reflective qualities and the shadow is very
distinct. My metal finishing shop
Sunny Day,
Recently I sent and email with an attachment of the Correct-A-Dial II
This is a fill in the blanks graph that displays the combined Equation of
Time and longitude correction at a single location.
The Correct-A-Dial II is now available in a format I'm sure many will
like...completed.
If you run the online demo for this software and compare the results for
solar bearing and (especially) solar altitude, you'll find some significant
discrepancies.
- Original Message -
From:
John
Pickard
To: Sundial List
Sent: Wednesday, May 17, 2006 8:25
PM
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