

An STL file describes an object/shape. This needs to be translated into actual print instructions such as move to X/Y position, squirt plastic, move again, etc. This is what a slicer does: It “translates” from a shape to actual print instructions. I’m not sure, but I’ve always assumed that it’s called slicing because it takes the 3D object and creates many vertical slices with print instructions.
I don’t know about your printer specifically, but I guess it takes Gcode (which is what you get as output from a slicer) like most other printers? I suggest you grab PrusaSlicer as it’s very flexible and supports a lot of different printer defaults. Load your STL in there, slice it, transfer the result to your printer, and you should in theory be good to go.
Tip: Start with something small.









The only step you’re missing is basically what I described above. I recommend grabbing PrusaSlicer, load your STL, and play around with it, as it shows after slicing the various print instructions it comes up with. For starting out, the defaults should work fine.