⚙️ Gears & Mechanics · PA6-GF / PPA-CF

3D Printed Gears & Mechanical Parts Calculator

Wear-resistant PA6-GF (Glass-Fibre Nylon 6) with the Strong preset is pre-selected! Try the "⚙️ Bevel gears (PA6-GF)" sample or drop your mechanical CAD model below.

STL · OBJ · 3MFProfessional equipmentNo hidden feesInstant order without quote

Rings: rotate in 5° steps (or click a ring to enter 0.1° angle) · Lay on face: click a surface

Overhang (supports needed) Borderline Show overhangs

📦

Drop your model here

or click to choose a file from your device

✨ No file handy? Try a sample model:

📐 No 3D file (only a hand sketch, photo or broken part)? Send an inquiry for a quote →

STL · OBJ · 3MF · max 120 MB. The file is analysed in your browser.

Size-

Volume-

Model weight-

Print time-

Supports-

Overhang-

1 Material and colour

Colour

2 Quality and settings

🛠️ Let VARVX configure it for me – choose the best orientation and strength Answer 4 quick Yes/No questions below, pick the usage class & material, and describe the part.

💪 Must the part withstand force / load?

✨ Must the exterior be ultra-detailed? ?We print with a very fine layer height (0.12 mm instead of standard 0.20 mm). This brings out fine details and smoother shallow curves, but significantly increases print time (and price) and can slightly reduce mechanical strength. 💡 Tip: On standard straight and functional parts the difference is barely visible to the naked eye – standard layers are usually best (choose No).

🪄 Must supported surfaces look as clean as the rest of the part? ?When part of the model overhangs in the air (angle > 45°, red areas in 3D view), temporary supports must be printed underneath. Choosing "No" (standard supports): a tiny air gap (~0.2–0.3 mm depending on nozzle) is left so supports can break away, leaving the supported surface slightly rougher with ~0.2–0.3 mm dimensional variance. Choosing "Yes" (dedicated support interface): we print the contact layer with a 2-nozzle printer using a separate release material at 0 mm gap, keeping the supported surface smooth, strong and accurate (slower & higher cost). 💡 Tip: If the supported side is hidden and ~0.3 mm variance does not matter, choose No – it is much more affordable.

☀️ Will it be used outdoors, in a car or warm area?

🧪 Choose usage class and filament: Click a usage class and select a filament below – see heat resistance and best use cases, and the price updates instantly.

Describe what the part does and how it is loaded:

Where and in what direction do forces, bending or tension act? (e.g. "bolt pulls from this hole", "clip bends outward" – we orient the layers for maximum strength)
Where is the part used and which surface must look the cleanest?

✓ We will orient the part on the build plate and configure print settings based on your answers.

Layer height

Infill: 15%

⚙️ Advanced settings

Nozzle

Walls

Bottom layers

Top layers

Infill pattern

3 Supports

Automatic (recommended)The 3D view highlights all surfaces that may require support. Exact supports are reviewed and configured for the best result before printing. No supportsIf the model prints fine without supports.

✨ Smooth & stronger support surface – dedicated interface material (Support Interface, Z=0 mm)The support contact layer is printed on a dual-nozzle printer using a separate release material (e.g. PETG ↔ PLA) with zero air gap (Z=0 mm). This leaves the supported surface smooth and dimensionally accurate, and adds significant strength on thin or curved parts because the bottom layers are pressed firmly together rather than printed loosely in the air. 💡 For thicker parts where the underside appearance does not matter, you can leave this unchecked – standard single-material supports are much more affordable.

✨ Logo on Part (SVG)

Upload an .SVG file and click on the model surface where you want to place the logo.

✋ ✋ Drag the logo across the surface to reposition it

Relief type

Embossed (+)Protrudes outward from surface Debossed (-)Engraved cavity into surface

Logo size 35 mm

Height / Depth 0.80 mm (4 layers)

⚓ Anchoring depth into part 3.0 mm

Rotation on surface 0°

📐 Bend around cylinder / pipe

4 Quantity and notes

Quantity

Note (optional)

🚀 Rush order (faster, extra charge)

Price / pc

Total

Price includes VAT, shipping is added at checkout. Standard dimensional accuracy ±0.2 mm. The price is an estimate - if the model turns out to be more complex we will let you know before printing.

Only have a hand sketch, STEP file or special requirements? Send an inquiry →

How it works

1. Upload your model

STL, OBJ or 3MF. The file is analysed in your browser - size, volume and overhanging surfaces.

2. Choose material and settings

Material, layer height, walls, infill and supports. The price updates instantly.

3. Add to cart

The file is added instantly to your cart and uploaded when you confirm your order at checkout.

Engineering Composites Built for Torque, Friction & Load

From replacement spur/bevel gears to factory assembly fixtures and structural linkages

⚙️ Gears, Sprockets & Chain Guides: PA6-GF

Glass-reinforced Nylon 6 combines self-lubricating polyamide wear resistance with glass-fibre tooth root strength and 182 °C heat resistance.

🦾 Rigid Brackets, Levers & Jigs: PA6-CF & PPA-CF

When zero deflection under load is critical, carbon-reinforced PA6-CF (186 °C) and PPA-CF (227 °C) deliver metal-like flexural modulus.

🛞 Shaft Couplings & Drive Rollers: TPU 95A

High-infill Shore 95A TPU excels in jaw coupling spiders, pinch rollers, and shock-absorbing mechanical stops.

Frequently asked questions

What is the best 3D printing material for functional gears?

PA6-GF (Glass-Fibre Nylon 6) is our #1 choice for gears due to its high wear resistance, fatigue life, and impact toughness. For light-duty indoor gears, PETG or PC also work well.

How many walls should I select for a high-torque gear?

Select the "Strong" preset (4 walls + 40% infill) or open Advanced Settings and set Walls to 5–6 so the entire gear tooth profile is printed as solid perimeters.

Can I grease PA6-GF and PA6-CF gears?

Yes! Polyamide 6 is completely unaffected by lithium grease, silicone grease, PTFE lubricants, and mineral oils.

How can I verify the shaft bore diameter (Ø) of my gear STL?

Click the "📏 Add measurement" tool in the 3D viewport toolbar and hover over the bore rim – it automatically displays the exact hole diameter (Ø).

What clearance should I add to a gear shaft bore?

Add +0.15 to +0.20 mm for a light press/snug fit on a steel shaft, or +0.25 to +0.30 mm for a free-spinning running fit.

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