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FDM 3D printing is incredibly rewarding, but beginners often run into a few common pitfalls. Keeping these 5 crucial precautions in mind before hitting "Print" will drastically improve your success rate and print quality.
An unlevel print bed is the primary cause of poor first-layer adhesion (prints not sticking) or slanted, warped models. While many modern 3D printers come equipped with an auto-leveling feature, it is still crucial to ensure the foundational mechanical leveling is correct.
Do not adjust temperatures blindly. Incorrect temperature settings can easily lead to a weak bond with the build plate, severe stringing, or even a completely clogged nozzle.
Don’t just hit print immediately after downloading a model! You must carefully review the layer preview in your slicing software to ensure the model has a stable and flat contact area with the build plate. If necessary, manually add support structures or enable bed adhesion assistants like a Brim or a Raft.
When printing with materials that require rapid cooling, such as PLA or flexible TPU, turning up the part-cooling fan speed helps solidify the extruded plastic instantly. This significantly improves the print quality of difficult sections like overhangs and bridges.
Some printers allow you to skip straight to "Start Print". However, printing without properly preheating the nozzle can result in a delayed filament flow, causing the printer to extrude nothing for the first few seconds (leading to a failed first layer or stringing).