Hey guys, so I have a couple questions about electromagnets that I was hoping to get some insight on here. Basically, I've been tasked with designing an electromagnet that is low-heat (<150F or so) yet high pull force. I'm improving on a past design where the electromagnet got way too hot (> 250F) too quickly (<15min). The past design consisted of a core with diameter 2" and length 6" with about 500 windings of copper wire. I've been messing around with a spreadsheet found on this website http://www.coolmagnetman.com/magelect.htm and it seems that a shorter, thinner core 1"x4" with 1500 turns will be my best bet, because it draws much less power. However, I can't verify the spreadsheet with my own calculations so I don't know if it's really all that accurate. Before I order the 1000' and start tediously winding the magnet, is there any way that I can be sure that this design will generate less heat than the previous model? I've tried modeling it in SolidWorks, but I'm not sure if thats accurate either since I'm getting temperatures of like 600F for both designs. Is my design even on the right track? There's just a lot of uncertainty with this project and I would like to be somewhat confident in the design before I start ordering all the stuff lol. Thanks for any help!