Gallery, Projects and General > The Design Shop
Magnetic Tumbler, Polishing home brew unit
snub:
--- Quote from: Bernd on May 26, 2010, 11:24:49 AM ---
To find the poles of a magnet you would use a compass. Usally the compass has two colors on the needle. First determine what color is used to point north. Take note of that color. Next slowly bring the compass and the magnet close to each other. See which color is attracked to what end of the magnet. If the color is the color you determined that was north it will indicate the north pole on the magnet.
NOTE: Somebody tell me if I wrote this correctly for easy understanding please.
--- End quote ---
I got my magnets today and bought a compass. Your method is absolutely correct. Thankyou.
snub:
I've got my magnets and my 'pins', have begun assembly and was searching around for a bowl. At the Rio Grande site I found this,and I wen't ........ Hmmmmmm. I wonder what that's about.
" Optional bowl converts your magnetic finisher to effectively use non-magnetic media."
So,I'm guessing, if the media is non magnetic, the spinning magnets must cause the orange disc/tube to spin.It almost looks like it has 'vanes' at the bottom of the disc. Anyone have any idea how this works? I'd love to experiment with it.
David Morrow:
--- Quote from: snub on May 26, 2010, 01:09:04 AM --- They both say that the magnets need to alternate in the circle, from north pole to south pole, or positive to negative, but neither one tells you how to determine the poles of the magnets.
--- End quote ---
You don't need a compass. Magnets will attract to each other North to South. If they repel, they are N to N or S to S.
Start with one magnet and mark either side as "A". Stick another magnet to that end. Pull them apart and and mark the attracting side of that second magnet as "B". Keep using the original first magnet to repeat the process for your remaining magnets. Mount half of the magnets with side "A" facing up and half with side "B" facing up. Half will be North up and half will be South up. Easy peasy.
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