I was wondering if anyone knows of an additive, bought or around the house/shop, that I can put into paint to make it so that after I have painted it can hold magnets to the surface?
Thanks so much,
KIT from Alberta, Canada
To hold a magnet you need metal, specifically ferrous metals (iron). I can't imagine that a coat of paint could possiblly hold a magnet even if you mixed in lots of iron filings. And iron doesn't like water, it rusts, so you would need to use oil based paint, which is difficult to work with. But still it seems extremely difficult. Why don't you screw or even glue (with epoxy or liquid nails) a sheet of steel (galvinized) and paint the surface. A sheet of steel is pretty cheap and easy to get and most paints will stick to it, especially if you use a primer first.
They sell Magnetic Paint at craft stores and some hardware stores. You can buy it in quart or gallon size.
You can buy paint that is made especially magnetic. Try your local paint store. It is expensive and you neeed several coats. Then you can paint any color over it and it is magnetic!
If you want to attach magnets to the wall, you need a metallic paint, not magnetic paint. Magnets will repel each other.
Another idea is you can use roof flashing. It's cheap, magnets stick to it, and you can cut it to size. Look in your large hardware store near roofing materials. It comes in widths like 12", 16" and sometimes smaller. You will need to buy metal shears from the dollar store to cut it. They look a lot like heavy duty scissors.
Be sure to sand the edges well because they will be sharp. Paint the item any color (be sure to use a primer first) then attach to your wall or surface.
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