Hi, I am new to CNC but have soon found out that speeds and feeds are very important. I downloaded FSWizard for android, entered an end mill and got some recommendations on speeds and feeds. These looked reasonable but I was looking for Plunge Feed and Speed which I couldn't find in the app. So I downloaded HSMAdvisor and entered the same data and got very different results and the Plunge speeds and feeds look frightening. I'm sure I'm doing something wrong but not sure what. Any ideas? Here's the data from HSMADVisor with the results from FSWizard underlined Material: A36, 44W Hot Roll Steel 160-220 HB same Tool: 11.001mm 4FL HSCobalt None Solid End Mill same Speed: 172.7 SMM/ 5000.0RPM 64m/min 1844rpm Feed: 0.1397 mm/tooth 0.5588 mm/rev 2794.00 mm/min 0.0688mm/tooth 507mm/min Chip Thickness: 0.1397 mm 0.069mm Reference Chip load: 0.1138 mm Engagement: DOC3.00 mm WOC4.00 mm same Effective Dia: 11.001 mm same Cross Section: 0.10 x Dia. Power: 0.9kW MRR: 33.53 cm³ 6.09cm3/min Torque: 1.66 N-M 0.82Nm Max Torque: 5.05 N-M Cutting Force: 302.0 N Deflection: 0.03 mm Max Deflection: 0.08 mm