Can You 3D Print RC Car Parts?

Last updated on April 12th, 2026 at 11:24 pm

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Yes, you can 3D print a lot of RC car parts, and for the right job it works surprisingly well. Things like body mounts, battery holders, light brackets, fan ducts, gear covers, and other non-crash-critical pieces are usually the sweet spot.

The catch is that RC cars take a beating, so strength, heat resistance, and fit matter a lot. A printed part that looks fine on the bench can fail fast once the car starts bouncing, flexing, or getting hot. That means material choice, print settings, and where the part sits on the vehicle all make a big difference. If you know what to print and what to leave alone, a printer can save money and make it easier to replace broken parts or build something that fits your setup better.

What RC car parts are worth printing?

Printed parts make the most sense when the piece is small, shaped oddly, or easy to replace. That is where 3D printing really shines. It gives you freedom to make a part that fits your car instead of being stuck with only what the manufacturer sells.

For larger cosmetic pieces and mounts, it helps to think about fit and attachment first. If you are printing body-related parts, a quick refresher on RC body basics can help you avoid sizing mistakes.

Part type	Usually a good candidate?	Notes
Body clips, body mounts, scale details	Yes	Great for custom fit and easy replacement.
Battery trays and holders	Yes	Make sure the pack sits securely and cannot shift.
Gear covers and guards	Yes	Useful when you want a simple protective piece.
Wheels	Yes, with caution	Fit matters a lot, especially at the hex and center hole.
Suspension arms, knuckles, hubs	Sometimes	Better for lighter use or as a prototype before finalizing a design.
Drive gears and high-load parts	Only sometimes	These see more stress and may need tougher material or a different manufacturing method.

What changes the answer?

The biggest factors are load, heat, and fit. A printed part that only holds a shell or protects a component is one thing. A part that takes hard hits, keeps precise gear alignment, or sits near a hot motor area is a different story.

Material choice matters too. The source material notes that high-heat and high-strength materials are available, and that is the direction you want to go when a part has real stress on it. If the part is tied to power or battery placement, check your layout carefully and make sure everything stays secure. A quick look at RC battery basics can also help when you are designing trays or holders around a pack.

• Load: parts that carry impact or twisting force need more care.
• Heat: parts near motors or electronics may soften if the material is not right.
• Fit: holes, hexes, and mounting points often need cleanup after printing.
• Orientation: the way a part sits on the printer can affect strength.
• Purpose: a cosmetic piece is much easier to print than a structural one.

How to 3D print wheels

Wheels are one of the more practical RC parts to print, but they need a little post-print work. A rough wheel may look fine on the bench and still sit badly on the car if the center opening or hex area is off.

1) Clean up the part

After you have printed your wheel, remove any loose printed material you find on the wheel. Make sure that the hex insert is free from loose material as well. If debris stays in the hex area, the wheel may sit incorrectly and not work properly.

2) Remove the existing wheels

Remove existing wheels by unfastening the single fastener at the center of the wheel with a 2.5mm Allen key.

3) Check the center wheel hole clearance

Using one of the fasteners you removed from the existing wheels, check the size of the wheel fastener hole on the printed wheels. The hole can shrink during printing, so test it with the wheel fastener first. If that is the case, drill it out to 4mm (0.150in).

4) Install and test

Fasten the wheels to your RC car with the fastener and make sure not to overtighten. After that, give the car a short test run and check for wobble, rubbing, or a wheel that is not sitting true.

For wheel fit and tire compatibility, it also helps to understand RC tire basics before you commit to a final design.

Can you 3D print an entire RC car?

Yes, you can 3D print an entire RC car, but it is much more involved than printing individual parts. The source material makes it clear that this is not a beginner project. You need the right materials, a good plan, and a careful assembly process.

The basic components called out in the source material are flexible and tough printing materials, nuts, bolts, bearings, a transmitter and receiver, an ESC and motor, a micro servo for steering, and a lithium-ion battery. You also need to be comfortable assembling the rear axle, front steering assembly, body, electronics, motor alignment, and wheels.

If you want a clearer picture of the radio side of the build, RC controller basics can help you understand the transmitter and receiver side of the setup.

Simple assembly order

1. Assemble the rear axle and front steering assembly.
2. Build the main body.
3. Attach the axle and steering assemblies to the bottom of the car.
4. Wire up the electronics.
5. Mount the motor and align the motor gear with the rear axle gear.
6. Screw on the top frame.
7. Add the wheels and rear spoiler.
8. Test the car.

That outline keeps the process manageable, but the real work is in the details. Fit, alignment, and wiring all matter a lot more on a full printed build than they do on a simple replacement part.

Practical tips before you print

• Start with a small replacement part before attempting a full chassis.
• Check the model dimensions against your actual car before printing.
• Expect to do some cleanup after printing, especially around holes and mounting points.
• Use tougher material for parts that see stress or heat.
• Do not overtighten printed parts, especially at the wheel center or hex.

FAQ

What RC car parts are easiest to 3D print?

Body accessories, battery trays, gear covers, mounts, and small replacement pieces are usually the easiest. They are less demanding than parts that take a lot of crash force.

Can you 3D print RC wheels?

Yes. Clean the printed wheel well, check the center hole, and drill it out to 4mm (0.150in) if needed. Make sure not to overtighten the wheel when you install it.

Are 3D printed RC parts strong enough?

Some are, especially if they are designed well and printed in a material that matches the job. High-stress or heat-heavy parts need more caution than simple body or mount pieces.

Is printing a whole RC car a good beginner project?

No, not usually. It can be done, but it is a much bigger project than printing individual parts and needs more planning, assembly skill, and patience.

What is the best next step if I want to start?

Start with a simple replacement part or accessory, test the fit, and learn how your printer handles RC-sized pieces before moving on to wheels or a full build.