Has Anyone Used these 3D Printing Projects for Custom Parts on DFRobot Shields and Robot Frames?

I’m working on a custom enclosure for my latest sensor/robot build using 3D printing, and I’m running into some common print quality issues (like under-extrusion and layer gaps). Has anyone here used online manufacturing services to improve prototype quality?

I found this troubleshooting guide on solving frequent 3D printing problems. Does anyone have experience combining services like this with DFRobot kits (e.g., 3D-printed parts for Beetle/Bluno sensors, chassis, or shields)?
Here’s the guide I’m referring to:

 https://www.justway.com/blog/3D_Printing/3D_printing_parts_common_quality_problem_solving_guide_5388fd76.html