I'm finally getting around to fixing up a pair of magnetic tool bars, like these: http://www.workshopheaven.com/tools/Mag ... _inch.html, that I've had knocking around in a box for a few months.
My (stolen - mwahahaha!) 'tip for the day' is to use some rubber paint, Plastidip or similar, to make them a bit grippier and ever so slightly softer when adding tools. The extra friction from the rubbery material adds to the holding power of the magnet, helping to stop heavier tools sliding down. I'm actually using up some liquid electrical tape that's been lurking in a corner for a few years past its use by date; you could equally get by with a thin smear of silicone sealant. An added benefit is that the coating reduces the risk of corrosion occurring between the magnet and the tool.
My (stolen - mwahahaha!) 'tip for the day' is to use some rubber paint, Plastidip or similar, to make them a bit grippier and ever so slightly softer when adding tools. The extra friction from the rubbery material adds to the holding power of the magnet, helping to stop heavier tools sliding down. I'm actually using up some liquid electrical tape that's been lurking in a corner for a few years past its use by date; you could equally get by with a thin smear of silicone sealant. An added benefit is that the coating reduces the risk of corrosion occurring between the magnet and the tool.