Maybe im just super lost haha.

I think we all start in this hobby a bit lost so much to learn so many possibilities so many questions.
Before you dive into a large project first inspect your machine  lubricate it and adjust for accurate dimensions.
print some test pieces and measure them. For accurate measurements get a set of digital calipers.
Tin

Thank you in advance for reading my post. I am very new to 3d printing and I just purchased a davinci 1.0. Now I realize that the xyzware is pretty worthless in terms of what you can do with it. Here is my big issue. I am trying tp print an ironman helmet. Obviously I need to cut it up to print all of it. How do I get the scaling right? I mean if I have to cut it up in pieces and import one at a time,how do I know what size each piece is supposed to be? Any help or tips on scaling would be greatly appreciated. THanks again!
Maybe im just super lost haha.