David, That seems about right, it was such a pad that was used on the aerial for my mobile phone. I recall that stick-on security plates for laptop computers also use a pad of double-sided "stuff". Wish I knew where I could buy it.
All I have been able to buy in small quantities is standard DIY / home hardware grade double-sided adhesive. It may be possible to get the high-strength stuff from 3M or one of the industrial tape manufacturers. I haven't tried this yet, but when I have asked manufacturers for small amounts of other products, I have found that the minimum order / package size was way beyond my means and needs. Even the agents for some companies are reluctant to order small quantities. Cheers, John [EMAIL PROTECTED] ----- Original Message ----- From: <[EMAIL PROTECTED]> To: <sundial@rrz.uni-koeln.de> Sent: Monday, July 28, 2003 5:15 PM Subject: Re: Re: SGS Gnomon Attachment > The 'glue' used to stick car mirrors is actually a very strong double sided sticky pad. Available from replacement car windsrceen fitters. > David. > > > > From: "John Carmichael" <[EMAIL PROTECTED]> > > Date: Fri 25/Jul/2003 17:52 CEST > > To: <sundial@rrz.uni-koeln.de> > > Subject: Re: SGS Gnomon Attachment > > > > Hi Tony: > > > > That's great information to know. I have a feeling the bolting method > > through glass or the metal structure would be better than the "car mirror" > > method. > > > > I wonder what method the glassers use to drill glass? I'll have to ask > > them. But, you know what I'm gonna do? I'm going to try to drill a hole the > > same way I drill holes in stone using a high speed diamond sphere with H2O. > > But I have no intension of make stained glass sundial windows myself. But I > > might try some stone inlays someday. > > > > > > John L. Carmichael Jr. > > Sundial Sculptures > > 925 E. Foothills Dr. > > Tucson Arizona 85718 > > USA > > > > Tel: 520-696-1709 > > Email: [EMAIL PROTECTED] > > Website: <http://www.sundialsculptures.com> > > ----- Original Message ----- > > From: <[EMAIL PROTECTED]> > > To: "Sundial Mail List" <sundial@rrz.uni-koeln.de> > > Sent: Friday, July 25, 2003 8:14 AM > > Subject: Re: SGS Gnomon Attachment > > > > > > > John Carmichael asked: > > > > > > > >What do you think is the best method to attach a metal rod gnomon to a > > > >stained glass sundial window? > > > > > > > >It's the most frequent question I've been getting from the "Glassers". I > > > >do have an article that Mike Cowham sent me that mentions that in the > > > >seventeenth century, a threaded gnomon was usually bolted to a hole cut > > in > > > >the glass. Of course that resulted in a lot of cracked glass and missing > > > >gnomons, especially if the glass was thin. > > > > > > > I've no practical experience of attaching gnomons to glass but would like > > > to experiment with: > > > > > > 1. modern adhesives to attach a gnomon with a small baseplate. If it > > > drops off after twenty years just clean it up and re-attach. The glues > > > used to stick interior mirrors on car windscreens would be a useful > > > beginning perhaps? > > > > > > 2. attaching through a drilled hole with e.g. a 20mm brass disc on each > > > side of the glass and soft vinyl washers in a sort of 'sandwich' squeezed > > > gently tight with a nut on the inside. The gnomon could be silver > > > soldered to the outer disc before assembly. Twin bolts would prevent > > > rotation. > > > > > > A very safe way to 'drill' glass is to use a short piece of thick-walled > > > copper tube of e.g. 6mm outer diameter with a few radial sawcuts in an > > > electric drill. > > > Garages are a good source of the right stuff. > > > > > > Place the glass flat on a firm/soft supporting surface, e.g. cork, and > > > build a tiny 'dam' around the intended hole site with Plasticene. Mix a > > > little turpentine with carborundum powder, place a few drops within the > > > dam and you can abrade a neat clean hole in no time but reduce the > > > pressure at breakthrough or the hole edges may flake. A thin piece of > > > wood with a 6mm hole will guide the tube until it begins cutting after > > > which it is just gently lifted and replaced to refresh the abrasive. > > > > > > Have fun > > > > > > Tony Moss > > > - > > > > > > > > > - > > > > __________________________________________________________________________ > Join Freeserve http://www.freeserve.com/time/ > > Winner of the 2003 Internet Service Providers' Association awards for Best Unmetered ISP and Best Consumer Application. > > > - -
