Re: Photo mask process for sundial layouts?
At 11:18 AM 1/12/98 -0800, you wrote: >Hello all on the list, > I have been toying with the idea of building a sundial using granite or >marble floor tile which can be purchased one at a time at our local Home >Depot. I have been experimenting with a small spot sandblaster to "carv >e" the lines into the granite using 10 mil plastic tape as a blast mask. >This is pretty time consuming with the exacto knife work of cutting the >patterns out. Looking in my yellow pages I found a company that can make >blast masks using a photo process which is used in the awards engraving >business. They sent me their catalog and some sample masks. I have tryed >one of these samples and it looks very promissing. They also have >classes on using their system of "sand carving". The Rayzist company is >local to me and I probably will look into it further. There web site is >http:\\www.rayzist.com This web site contains most of what I received >via the mail (except the samples). > Has anyone in this group used this technique for sundial fabrication? >I appears to be a process which could be quite economical and can >provide a great deal of detail into a very durable dial material. > >Happy dialing >Bob Haselby (N32d58' W117d06') > No, but please tell us more! I have been using a photo-transfer process to make sundials out of brass and am always on the lookout for new techniques. Mike Koblic, Quesnel BC
Re: Sundials in Lisbon(Portugal)
On Friday I sent the following reply to Bent Hirsberg. It may be of interest for more members of the Sundial List, since it can be helpful for finding answers to similar questions. Wolfgang Dick Forwarded message: > From: Wolfgang R. Dick <[EMAIL PROTECTED]> > Subject: Re: Sundials in Lisbon(Portugal) > To: [EMAIL PROTECTED] > Date: Fri, 09 Jan 1998 13:53:04 MET > > Here are a few results which I found with the help of Alta Vista > (http://www.altavista.digital.com/) and the keywords > +portugal +museum* +astro* > > Naval Museum, situated next to the Monastery of Jeronimos in Lisbon > http://www.cncdp.pt/oceanos/n22/artigos/por/poring.html > "There is an extensive collection of craft, as well as naval artillery and > nautical instruments (of particular note is the display of nautical astrolabes > and planispheres - the largest collection of astrolabes in the world) showing > important events in the history of the Portuguese navy, not only in the golden > age of Portuguese navigation, but also in the centuries which followed." > > S&T's Astronomical Directory: PORTUGAL > http://www.skypub.com/astrodir/portugal.html > > Observatorio Astronomico de Lisboa (Astronomical Observatory of Lisbon) > http://astro.cc.fc.ul.pt/OAL-eng.html > (Most information in Portuguese only. There is a picture of a sundial in > http://astro.cc.fc.ul.pt/edificioOAL.html) > > The last link is from my own page on historical observatories around the > world: http://www.astro.uni-bonn.de/~pbrosche/hist_astr/ha_obs.html > > I have also a page on museums and other places related to astronomy > (http://www.astro.uni-bonn.de/~pbrosche/hist_astr/ha_mus.html), but up to > now there isn't anything from Portugal. I will add the above mentioned > Naval Museum. > > You may find more when you will look on more links from the search with > Alta Vista. You may also search for > +portugal +sundial* > (Or replace portugal by lisbon or lisboa. Upper case is not recommended, > i.e., do not search for Lisbon.) > > Kind regards, > Wolfgang R. Dick
Photo mask process for sundial layouts?
Hello all on the list, I have been toying with the idea of building a sundial using granite or marble floor tile which can be purchased one at a time at our local Home Depot. I have been experimenting with a small spot sandblaster to "carv e" the lines into the granite using 10 mil plastic tape as a blast mask. This is pretty time consuming with the exacto knife work of cutting the patterns out. Looking in my yellow pages I found a company that can make blast masks using a photo process which is used in the awards engraving business. They sent me their catalog and some sample masks. I have tryed one of these samples and it looks very promissing. They also have classes on using their system of "sand carving". The Rayzist company is local to me and I probably will look into it further. There web site is http:\\www.rayzist.com This web site contains most of what I received via the mail (except the samples). Has anyone in this group used this technique for sundial fabrication? I appears to be a process which could be quite economical and can provide a great deal of detail into a very durable dial material. Happy dialing Bob Haselby (N32d58' W117d06')
