Hi there! I hope someone can help me ... I'm trying to build an electromagnet to use in a system inspired by Bob Beck and electro-medicine. I have a friend building me a circuit to generate a pulsed wave to drive an electromagnet. It's my job to build the electromagnet, but after several weeks of scratching my head on the maths for this, I still can't figure out how many times I should wrap the copper wire around the core? (and what materials I should use for the core and the copper wire). I would like the magnet to be 10cm wide, with a maximum field strength of 6000 Gauss. I understand using a iron core, with copper wire is best, but how many turns and of what thickness wire should I have? If the current is too high, thinner wire might burn out. I understand Neodymium core magnets would be helpful in increasing the magnets strength and lowering the amount of turns of copper. However, cost is an issue for me, so I don't mind doing the extra work with an iron core if that can still reach the target field strength. Also, how much current is required to reach the target field strength level, if the unit is being pulsed at 10hz? I am a medical student and am building this magnet so that I can test the Bob Beck thesis out to see if pulsed electromagnetic fields can work to regenerate tissue and joint damage. Any help you can offer would be greatly appreciated!