Magnetics sticking to vehicles

[gabagoo]

I warn every customer walking out of here with magnetic signs that they MUST remove them weekly and clean the vehicle and the magnetic to prevent surface rusting. Had a good customer call complaining that they spent 2 hours trying to remove the leftover magnetic material that welded itself to one of their employees pick up truck. He said the guy cleans the truck all the time and blah blah blah. I basically told him that if the magnetic was in fact being removed weekly and being cleaned I could see no way that it could weld itself to the body.

What's the deal with this issue? Why does the magnetic stick to the vehicle like this anyhow?

 

[InstantOneMedia]

We sell a selection of artwork on magnets for appliances, and people often return them claiming our magnet is defective. They assume their "stainless" dishwasher will hold magnets, yet despite our recommendation to double check they never do.

 

[omgsideburns]

Or they don't actually ever take them off. Ever. That's the only time we've ever seen that problem. The people say, "Oh man I haven't taken it off the door all year."

 

[Gino]

What you described is definitely end user non-maintenance, but if it's a really good customer, just make another set and tell them to make sure the worker is cleaning once a week.

The guy might clean his truck regularly, but does he remove the mags when doing it or just wash around them..... causing even more problems ??
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[bob]

Off the top of my head without extensive and concomitantly excruciating studies it may well be a combination of two things.

First; the magnet is merely sitting atop the surface, it must necessarily move. Be it vibration or whatever, it's almost a certainty that if does move. Micro moves perhaps but it moves nonetheless. One surface moving against another means friction and abrasion to some degree no matter how small that might be. Over time it could be telling.

Second;the magnet wants to pull the material into the surface as opposed to merely hold in in place.

This combination of movement, friction and abrasion, and attraction might result in the magnet trying to merge with the surface. The surface being paint. Especially fresh unoxidized paint.

 

[John Butto]

Off the top of my head without extensive and concomitantly excruciating studies it may well be a combination of two things.

First; the magnet is merely sitting atop the surface, it must necessarily move. Be it vibration or whatever, it's almost a certainty that if does move. Micro moves perhaps but it moves nonetheless. One surface moving against another means friction and abrasion to some degree no matter how small that might be. Over time it could be telling.

Second;the magnet wants to pull the material into the surface as opposed to merely hold in in place.

This combination of movement, friction and abrasion, and attraction might result in the magnet trying to merge with the surface. The surface being paint. Especially fresh unoxidized paint.

Everything Bob said plus the fact that moisture develops between the magnet and paint and the changing temps over a period of time will cause the materials to break down.

 

[Mosh]

With every order I have a magnet care sheet I tape right on the magnet so there is no way to miss it. USE AT OWN RISK is in large print.....