This master profile is a quality-first starting point for the FlashForge AD5X with a 0.4 mm nozzle. It keeps the machine fast, but backs away from the stock speed ceiling where surface finish, consistency, and dimensional reliability benefit.
0.4 mm nozzle • 0.20 mm layer height • ordinary dry PLA
Use for display pieces, dimensional parts, visible curves, and anything where ringing bothers you more than print time.
The default choice. Fast enough to feel like an AD5X, conservative enough to preserve clean walls and dependable extrusion.
Good for prototypes and forgiving geometry. The filament's max volumetric flow may become the real limiter before these speeds are reached.
| Setting | Master value | Adjustment rule |
|---|---|---|
| Nozzle temperature | 220°C | Drop 5°C for glossy/stringy PLA; raise 5°C for weak bonding or high-flow demand. |
| Bed temperature | 55°C first / 50°C after | Raise toward 55-60°C for stubborn adhesion; reduce if elephant foot worsens. |
| Flow ratio | 0.98 | Calibrate per filament if top surfaces look over- or under-filled. |
| Pressure advance | 0.025 | Recalibrate after major filament or nozzle changes. |
| Max volumetric flow | 25 mm³/s | Reduce if high-speed sections look matte, thin, or under-extruded. |
For speed-sensitive hidden parts, Nearest seam is acceptable. For display faces, manually place or hide the seam where possible.
If corners lift or layers become brittle, reduce auxiliary cooling before raising bed temperature aggressively.
The AD5X is rated up to 20,000 mm/s² acceleration, but surface quality rarely needs the ceiling.
| Reference | Approx. value | How to use it |
|---|---|---|
| Stock outer wall | 200 mm/s | Useful as a fast-process reference, not the default for best walls. |
| Stock inner wall | 300 mm/s | Interior walls tolerate more speed, but volumetric flow still governs. |
| Stock sparse infill | 270 mm/s | Fine for prototypes when extrusion keeps up. |
| Stock travel | 500 mm/s | Reasonable when motion remains stable. |
| AD5X rated print speed | Up to 300 mm/s | Hardware capability, not a universal quality setting. |
| AD5X rated travel | Up to 600 mm/s | Useful headroom for non-print moves. |
Calibrate by filament brand and color when quality matters. Pigments can change flow behavior more than people expect.
Dry PLA → drop nozzle 5°C → verify retraction around 2.0 mm / 45 mm/s.
Lower outer-wall acceleration → lower outer-wall speed → verify belts and motion system.
Raise nozzle 5°C → reduce cooling → slow high-flow sections.
Recheck flow ratio → slow top surface → add one top layer if needed.
Reduce bed heat after layer one → tune first-layer squish → use elephant-foot compensation.
Clean plate → reduce auxiliary fan → use 55-60°C bed or add brim.
Use full bridge cooling → lower bridge speed → slightly reduce bridge flow if strands sag.
Lower max volumetric flow / speed → raise temp 5°C → confirm nozzle is clean.
Easy Removal, Balanced, and Best Underside support profiles for PLA-on-PLA printing.