Re: Porcelain Sundial Faces

[JOHN DAVIS]

 uropean
 firm called Vitramet who arranged for the enamelling to be done in Mexico - a very large furnace was needed!The story of the dials is in the Bulletin of the British Sundial Society, September 2004.Regards,JohnJohn Carmichael [EMAIL PROTECTED] wrote:




Hello all:

I've been investigating the best and most durable materials for the sundial faces of my sundial cupola design.

I've discovered this:

1.Even the bestenamel paints chip, wear off and fade.
2. Baked powder coat paints are much more durable but you can not easily paint more than one color or a design on top of another color.You can not overglaze, (put another layer of powdercoat over a base layer).
3. Porcelain has a great advantage in that it can be overglazed with different colors of vitreous paints and refired. So porcelain painting is similar to glass painting in that you can paint it with a permanent overglaze of different colored paints that do not fade, chip or flake off. It's practically weather-proof!

Many old clock faces were madeon painted porcelain for these very good reasons.

There are companies who will paint and fire your sundial design on porcelain. They can make stencils from your design drawingsor they can paint by hand. I even found one company that has a photographic technique of applying paint to porcelain. (and it's here in Tucson!)

Have any of you ever seen a painted porcelain sundial?

Here are a couple of good websites about porcelain painting (also known as "china painting").

http://www.china-painting-list.com/fullsrch.html
http://www.porcelainpainters.com/
http://www.porcelain-industries.com/porcelain-industries/porcelain-industries.htm

John L. CarmichaelSundial Sculptures925 E. Foothills Dr.Tucson AZ 85718-4716USATel: 520-6961709Email: [EMAIL PROTECTED]

My Websites:Sundial Sculptures: http://www.sundialsculptures.comStained Glass Sundials: http://www.stainedglasssundials.comDr J DavisFlowton Dials

Re: Sonne Software for Shepherd Dials

[Helmut Sonderegger]

Hello Roger,
sorry for my late answer. I am not  online every day.

I think already Fer sent you an answer. But here it is for all interested:
The Equation of time is included in software SONNE. For your problem
1. Select cylindrical Sundial in menu Options / Type of Sundial (or key
F6)
2. Select menu Options / Parameters of Sundial  (or key F7): In the
tabsheet for cylinder sundials  you can select box Construction with
Equation of Time
3. Menu Display / Drawing the Sundial (or key F8) draws the sundial.

If anybody needs some more help, please let me know!
Helmut

Sonnengasse 24,  A-6800 Feldkirch
47.25 N,   9.59 O
Homepage: http://web.utanet.at/sondereh
- Original Message -
From: Roger Bailey [EMAIL PROTECTED]
To: Sundial Mail List sundial@rrz.uni-koeln.de; Helmut Sonderegger
[EMAIL PROTECTED]
Sent: Monday, April 18, 2005 6:50 AM
Subject: Sonne Software for Shepherd Dials


 Hello Helmut,

 I hope you don't mind me sharing this note with the mailing list.

 I am helping my grandson with a science fair project and he is interested
in
 making a cylindrical sundial. Really, it was his suggestion. I know the
 theory for altitude dials but needed to provide a specific design for his
 location. I was pleased to find that your program Sonne includes
 cylindrical or Shepherd dials as one of the options available. Excellent!
 After checking the version distributed with the NASS Compendium, I
 downloaded the latest version from your website.
 http://web.utanet.at/sondereh/sun.htm

 I am very pleased with the performance of the program. It allows me to
 specify the location and size to get a specific design. It allows for
local
 or time zone time. This is great. My design problem is now almost
completed.
 Thanks for making the program available. I have not spent much time
learning
 all the options but I did find the English/German option. This is a great
 help for people like me with limited language skills.

 My only problem so far is the equation of time correction. I could not
find
 this option for this type of sundial. Has it been included? Did I miss it?
 Has any one else included this option in a similar program to give
standard
 time on a cylinder dial?

 Regards,

 Roger Bailey
 Walking Shadow Designs
 N 48.6  W 123.4

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