Should I use part cooling fan for ABS or ASA?

ABS and ASA require zero or very low fan speed (0%–20%) inside an enclosed chamber. Excessive cooling causes severe layer delamination and warping.

Why does PLA need 100% cooling fan?

PLA has a low glass transition temperature (~60°C). High cooling ensures crisp overhangs, sharp details, and prevents heat creep and curling on small layers.

3D Printer Part Cooling Fan Calculator

Calculate optimal part cooling fan speeds and layer time cooling thresholds across PLA, PETG, ABS, ASA, TPU, and Nylon 3D printing materials.

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How to Use Cooling Fan Recommendation

Select your filament material (PLA, PETG, ABS, ASA, TPU, Nylon, PC).
Enter your printer fan setup (single 4010, dual 5015, or auxiliary chamber blower).
Input layer print duration and bridge overhang angle.
View recommended min/max fan speed percentages and layer time slowdown thresholds.

What is the Cooling Fan Recommendation Tool?

A thermal guidance calculator that prescribes optimal part cooling fan percentages based on polymer crystallization dynamics and overhang geometry.

Formula Used

• Base Fan Speed = Material Baseline Cooling Factor • Overhang Modifier = Base Fan + ((Overhang Angle - 45) / 45) × Boost % • Short Layer Adjustment = IF(Layer Time < Min Threshold, Increase Fan %, Maintain Base %)

Real-World Example

Printing PLA on small miniature layers (< 8 seconds duration): Recommended fan is 100% with minimum layer speed reduced to allow plastic to solidify.

Accuracy and Limitations

Enclosed printer ambient temperatures and duct efficiency significantly influence cooling performance.

Who It Is For

Makers troubleshooting stringing, bridging sag, and layer adhesion weakness.

Frequently Asked Questions

Should I use part cooling fan for ABS or ASA?: ABS and ASA require zero or very low fan speed (0%–20%) inside an enclosed chamber. Excessive cooling causes severe layer delamination and warping.
Why does PLA need 100% cooling fan?: PLA has a low glass transition temperature (~60°C). High cooling ensures crisp overhangs, sharp details, and prevents heat creep and curling on small layers.