Hi all, First post, be gentle... I'm trying to build a system based on the MIT Actuated Workbench. They used electromagnets with the following spec: 1.9cm (0.75”) diameter x 3.8cm (1.5”) length, wound with 32-gauge copper wire with a total length resistance of 120-122 ohms, with no metal housings so to not focus the magnetic field. They used 27 DC volts and draws about 250mA. From what I read, it seamed to be an almost arbitrary choice though, so I was hoping to optimist the design to create more forces. I was also hoping to use a more standard 24V power supply (not sure why they used 27...) I'm not sure where to start this process and I was hoping to get some advice. I thought maybe some trial and error through a simulation tool could work, but tell me what you think (also for that, so far I saw recommendations for FEMM, MaxFEM, Vizimag, Elmer and OpenFOEM, so I could also use a recommendation for which one to use) Thanks!