Interactive DFM Utility

Draft Angle & Taper Calculator

Avoid tooling modifications, drag marks, and ejection stresses. Select your plastic material, surface finish, and draw depth to calculate optimal draft angles and physical tolerances in real time.

1. Select Plastic MaterialShrinkage: 0.4% - 0.7%

Amorphous polymer with excellent dimensional stability. Moderate draft requirements.

2. Select Surface Finish (Texture)High Polish

Semi-gloss finish polished with fine emery paper. Good balance of cosmetics and release.

3. Draw Depth (Wall Height)

Min: 1 mmMax: 200 mm

Custom Draft Angle Override (Optional)Leave blank to use recommended

DFM Calculation Results

Draft Angle1.5°

Taper Offset0.6546mm

Taper Profile View (Exaggerated for Clarity)

NTE Lab Engineering Insights

Cosmetic Mold Texture: Standard chemical grains (like Mold-Tech B2B textures) require a minimum of 1.5° of draft per 0.001 inches of texture depth to prevent scuffing and drag marks during ejection.
Part Clearance & Fitment: Your taper creates a physical offset of 0.6546 mm at the top of the wall. Ensure mating internal components or PCB edges clear this tapered boundary.
Material Considerations: Highly polished surfaces can stick; ensure ejector pins are placed near deep ribs.

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