We are no-where near the point where fused filament 3D Printing is a plug and play operation. In the last 12 months I've had to spend a lot of time and effort to get reasonable prints, and have had to regularly consider things like:
Printer idiosyncracies (which a professional printer should avoid):
- Wear & tear on pulleys and bushings changing belt performance
- Correct hot end temperatures, scorching and smoking of filament leading to clogged nozzles
- Bed flatness
- Enclosure temperature control, adhesion to the bed and control of warping
Then, even if your printer is working well there are a huge number of factors to consider when drawing and slicing your shape:
- Orientation of the shape with respect to grain in the filament to give good styrength
- Orientation of the shape to avoid bridges and overhangs
- Inside fill percentage and fill style to optimise between strength and potential warping.
- Adjustment for tolerance and oozing around and intermeshing parts
That's not a complete list, but it's what I'm down to now on a regular basis now that I've tweaked all of the other settings and am getting some consistency.