1st TIMER/NEW/ Help with how 3dPrinitng woks?  

RE: 1st TIMER/NEW/ Help with how 3dPrinitng woks?

https://www.printables.com/tag/dodgers
try this link, it shows a number of signs. Choose one Show us the actual link, and ask how you print it!

e.g. 
https://www.printables.com/model/252438-la-dodgers-logo-plaque/files
lets assume you have a Mk4 Printer, (Same process works with all single filament  Prusa printers and most other printers
Load the .stl, into Prusa Slicer, and change the filament colour to WHITE. 
Slice the file

this shows that the print has two areas at different heights

Use the Scroll Bar to identify where the model changes size The model is about 10mm tall, so it's likely that the change in size happens about 5mm from the bottom, 
click on the orange cross on the scroll bar, this will add a colour change  code, to the printer Gcode. 
the slicer will then show two  different colours for the two sections of the print
If you select the top part of the scroll bar, you can change the display colour to show the preferred colour as below

if you now load the Gcode file into the printer, and start the print with white filament and the printer will print the lower part of the model, then the printer will respond to the colourchange gode, and eject the white filament then request the new filament, (the printer does not know what colour this filament is. so the responsibility is yours,, to install the correct colour  (In this case Blue) 

and the printer will continue the print to full height, with the new colour. 
Below is a ZIP file, containing, the original STL, and 
a project file, containing the original STL and the settings, to do colourchange
Dodger LA v2
regards Joan