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Thanks EdStainless, I've not heard of that material before. I'll check it out and see how I go. Thanks again all, very greatly appreciated :)

Hi Guys, Thanks for the details and suggestions. The arrangement I'm shooting for is per the image attached. For reference of scale: The wheels are about 72mm dia. Very interesting what EdStainless says about the larger holes in the steel end plates. I wasn't aware of that at all. The shaft...

Thanks MagMike! So there's no benefit to using 2 magnets in the sandwich? Or if I do use 2 magnets, then you say it's better if it's a "club sandwich" with a steel (ferrous) spacer in the middle of it all instead of a non-ferrous one and steel disks on both sides? Yes the magnets are crazy...

Hello good Ladies and Gentlemen, For an educational robot I'm building, I need to make a magnetic wheel arrangement and need some technical advice on design. Sincere thanks to anyone who is able to help, I'm more software oriented and my high school physics has escaped me. Basics: -I have...