John, I believe these are essentially one piece - the magnet is permanently attached inside the cup. You'd want a separate magnet and ferromagnetic cup, not stainless steel.
Dave Sent from my iPhone On Jan 5, 2011, at 8:40 AM, "John Carmichael" <[email protected]> wrote: > They have just what we need! > > They're called "Mounting Magnets". The top piece is cup shaped and fits > nicely over the bottom magnet so they won't slip around. The top > non-rustable stainless steel piece even comes with a threaded hole that you > could screw a threaded gnomon rod into!!! > > And, they come in all sizes- including metric > > These things are PERFECT! > > Here is a sample of one of them. See: > http://www.kjmagnetics.com/proddetail.asp?prod=MMS-D-XC > > They also have rubber, plastic and teflon coated magnets! > See: http://www.kjmagnetics.com/products.asp?cat=164 > > > > Important Safety Warning! > Read Before You Order and Use the Magnets > > Handling them with care is necessary to prevent personal injuries, property > damages and magnet damages. > > 1. Neodymium magnets are brittle; they can be broken or can splinter in a > collision. One should wear gloves and protective glasses when handling these > magnets, because splinters could disengage and fly from the magnets. > 2. Normal Neodymium magnets will lose their magnetic properties if heated > above 175°F (80° C). Higher temperature rare earth neodymium magnets are > available in our store. > 3. The strong magnetic fields of neodymium magnets can damage items such > as television, computer monitors, credit cards, bank cards, computers, > diskettes and other data carriers, video tapes, mechanical watches, hearing > aids, loud speakers and VCRs. Pace-makers may be damaged or switch to "Test > Mode" in the presence of a strong magnetic force, if a pace-maker is in use, > keep a minimum of 3 feet distance. > 4. You should avoid having constant contact with magnets of any size and > keep a distance of at least 3 feet to large magnets. > 5. Children should not be allowed to handle neodymium magnets as they can > be dangerous. Small magnets pose a choking hazard and should never be > swallowed or inserted into any part of the body. > 6. Under no circumstances should you try to cut, saw or drill the > Neodymium magnets! Not only would the magnet break, but the resulting dust > from the magnet is very flammable. Neodymium magnets should never be burned, > as burning them will create toxic fumes. > > > > > -----Original Message----- > From: Mike Shaw [mailto:[email protected]] > Sent: Tuesday, January 04, 2011 4:29 PM > To: John Carmichael > Cc: Sundial List > Subject: Re: Glass on Glass Mosaic Indoor Sundial Windows > > John > > Nobody has mentioned double glazing yet. > I assume that you don't bother with that in Arizona. > Will the magnets still be OK to use through two thicknesses of glass with an > > air space between? > > Mike Shaw > > 53.37N 3.02W > www.wiz.to/sundials > > --------------------------------------------------- > https://lists.uni-koeln.de/mailman/listinfo/sundial > --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
