Magnetic force in two axes
Magnetic force in two axes
(OP)
I need to hold two small bars of acrylic (1 x 5 x 1/4) in alignment. I can only put the magnets into the large flat surfaces, between the bars. I have used 1/32 x 1/4 neodymium disks, and they work fine against lifting one bar off the other. But the bars can slide, one over the other.
Is it even theoretically possible to have a magnet hold in two directions at once????
Is it even theoretically possible to have a magnet hold in two directions at once????





RE: Magnetic force in two axes
RE: Magnetic force in two axes
Another option is to provide mechanical features like a pin/slot in the magnets you add that might provide some mechanical resistance to movement.
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RE: Magnetic force in two axes
Right. I just want to hold them together and keep them from slipping relative to each other. Strongly enough that I can position them in a jig, but they won't move under light pressure from a finger.
I'll try a stronger magnet.
thanks.
RE: Magnetic force in two axes
Think of refrigerator magnets: If a refrigerator magnet is holding up a single piece of paper, the frictional forces between the paper and the surface of the refrigerator are high enough to overcome gravity. With multiple sheets, the attractive force decreases and gravity overcomes frictional forces.
There are some magnet arrangements (such as Halbachs, as IRstuff suggested) that'll help reduce sliding, but then economics comes into play. Bigger magnets are probably the cheapest/simplest method.