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Thanks again for the help guys - I have locacted a source for the magnet wire. Now I just need to find a source for the steel - hopefully my local machine shop has some already. Ill keep you updated on my progress and Im sure Ill have more questions... Mike

Thanks MJR2! This looks great. Before I was looking into using a smaller gauge wire with more turns, but I like the possibility of a bigger coil running cooler than a small one running hot. My main question now is what kind of wire to use - I found some specific 14AWG Belden Magnet wire in...

Thanks UKpete! - Ill do some back of the envelope calculations a little later tonight. -Mike

Thanks for the reply UKpete! You are correct - this is going to be a C shape magnet with the faces pointing. Thank you for the fringe field caution - I will make the faces as big as I can. I would like to go right ahead and build a prototype, but I have some very basic questions since I have...

MJR2, Thanks for the reply! (150 Gauss field) -I'll say 2.5cm for the gap. That's the smallest it can be. -Cross section of the core could be .75" square. This can change. -I am envisioning the coil opposite of the gap in the C shape. Is this an incorrect configuration? -Somewhat continuous...

Hello, My first post here - great forum! I am building an electromagnet for a magneto-optical study, I am hoping someone can point me in the right direction My specs are fairly straightforward: C shape electromagnet with a 5cm or so gap varaiable 0 - 150 Gauss max field I know the core...