Yes, thats why I'm not contributing more, but following.
Wire wizard is wrong about the resistance of my finished coil
There can be many reasons for that. Ambient temperature, accuracy/resolution of the device reading your coils resistance, additional resistances such as internal resistance within your device/the resistance of your atomizer, etc.
Wire Wizard works off of set parameters. Such parameters can be very different to the wire you are using. Kanthal, as an example, is an alloy that can allow a variance of +/- 10% of Chromium and +/- 3.5% of Aluminum (according to Wiki). Is the gauge of wire you are using exactly as Steams set parameters down to the thousandths of a mm? Is the coil Jig exact to Steams values, is the length of wire used within your coil exact to Steam’s calculations.
And as you know, a coil’s resistance changes with temperature – some more than others. So is the ambient temperature the same as what Steam Engine referenced for your type of wire.
Steam Engine is just a guide that provides a numerical value for you to compare coil A with coil B. It’s accuracy to your build is dependent on whether you are using wire that has the exact specifications as it does. Said specifications needs to come from the wire’s manufacture, and even then the numbers may not be accurate.
Or one can perform objective measurements to find their own wire specifications. But this would render Steam to be of little or no value – why count on a virtual calculator when you can just measure for your self and obtain exact measurements.
Edit: Just measured the thickness of 24 awg Titanium wire I have on hand, which should be 0.5106mm. My wire = 0.47mm. Steam = 0.511.