This Week in 3D Printing: Stronger Parts and Better-Looking FDM Results

This week’s theme: fine-tuning over shortcuts

This week’s three guides are about getting more from FDM prints by choosing the right setting for the problem at hand. A high infill percentage is not automatically the way to make a part stronger, and features such as pressure advance and ironing work best when the basic settings are already dialed in.

Strength is about more than infill

More infill does not always mean stronger 3D prints: how to prioritize walls and infill explains how walls, infill, geometry, and print orientation work together. The guide recommends starting with the part’s shape and load, then testing wall count and infill incrementally. A controlled comparison test makes it easier to see which change actually helps.

Smoother corners with the right calibration

Pressure advance in FDM: how to get smoother corners without over-adjusting explains how pressure compensation can reduce material buildup when the print direction changes. But the feature does not solve every quality problem: start by checking factors such as extruder feed, temperature, and nozzle, and follow the calibration method for the firmware you use.

Smoother flat top surfaces

In Ironing in FDM: when it creates a smoother top surface—and how to set it up, you’ll learn when ironing can be useful and which settings affect the result. The feature is mainly intended for flat, visible surfaces and works best when the top layers are already printing evenly. Flow, spacing between passes, and speed are some of the settings to test.

In short

The common advice in this week’s guides is to troubleshoot systematically: choose the setting that suits the part’s shape or surface issue, change one thing at a time, and compare the results. This gives you a clearer picture than increasing several values at random.