Dear all, a spider dial can also be obtained as a special monofilar dial by means of the Orologi Solari s/w program.
The project result can be exported as usual to several formats including PDF and dxf. Ciao. Gian Il 02/giu/2016 17:36, "Helmut Haase" <[email protected]> ha scritto: > Dear Kevin, > You wrote " I would love to hear from anyone working on a similar > approach. " > I use the freeware Scilab <http://www.scilab.org/> to produce the spider > hour lines and the month circles and the contours and holes of the dial. > The graphic is exported to pdf by Scilab. All further editing is done in > Adobe Illustrator. The drawings for the laser cutter and the laser engraver > are dxf exports of pdf files, also produced by AI. > > Best wishes > Helmut > ------------------------------------------------------ > > > Am 02.06.2016 14:37, schrieb Kevin Karney: > > Dear Gnomonists > > Recently, there has been a small correspondence about Spider Dials. This > message mainly concerns those who like to do all their gnomonic calculations > programatically. > > I attach a short text file that contains the routines needed to prepare > spider curves for a horizontal dial with a gnomon of given thickness. > Computer routines are usually language and implementation specific (as these > are), but the logic and gnomonics provided are correct (or so I hope and > pray). The language is Python, which is easily read and quite easily > adaptable to any other language (e.g. Java). > > For me, the advantage of using a programical approach is that I use the same > program to prepare graphics files that can be sent to... > i) a laser engraver to make a cheap plywood maquette of my design to check > things out > ii) a water jet cutting company to cut out the dial plate and gnomon > iii) a photo-etching company to create the dial. > > I am current working on the routines to generate G-Code that can go direct to > a CNC routing engraver. I would love to hear from anyone working on a similar > approach. > > Best wishes > Kevin > > p.s anyone who wants the astronomical routines mentioned in the text file > have only to ask! > > > > > > > > > ---------------------------------------------------https://lists.uni-koeln.de/mailman/listinfo/sundial > > > > --------------------------------------------------- > https://lists.uni-koeln.de/mailman/listinfo/sundial > > >
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