said by tschmidt:That is a neat sundial, we will have to get one like it this this summer.
I made a bunch of them in the 1990's. Pre-internet, it was still a hidden set of formulae. »
sundials.org/ is a good place to start.
"Sundials, Their Theory and Construction" is a good book.
I use re-rod because it's cheap and easy to work with. 'Drops' from the local metal supply works well for the gnomon (pointy thing) Bronze brazing rod is good for small units.
Good luck!
Edit:
If you buy one, get it from a local Artiste. The Made in China dials don't work. They have to be made for a specific Latitude and Longitude. If the hours are equidistant degrees and the gnomon (pointy thing) is 45°, it won't work.