Soft 3D Printed Protection for MRO Overhaul and Repair

TPU Cylinder Head Supports That Help Prevent Damage in the Shop

In overhaul and repair work, damage does not always happen in service. Sometimes it happens on the bench.

Cylinder heads and similar components often have to be set down, rotated, inspected, cleaned, or staged during repair. The problem is that many of these parts have delicate machined surfaces, sealing faces, ports, or protruding features that can be nicked, scratched, or damaged if they are placed directly on a hard workbench or improvised support.

A customer recently needed a better way to handle and protect cylinder heads during repair and overhaul. They wanted something simple, durable, and easy for technicians to use without adding unnecessary steps to the process.

We responded by designing a custom TPU 3D printed protective support specifically for that type of work.

The Need

In many repair environments, technicians are forced to use whatever is nearby to support a part:

• wood blocks
• shop rags
• cardboard
• generic rubber pads
• makeshift fixtures

These may work temporarily, but they are often inconsistent and not shaped for the part being repaired. That can lead to:

• cosmetic damage
• scratched or marred surfaces
• unstable setups on the bench
• unnecessary risk to sealing surfaces or critical features
• slower handling during teardown and inspection

When the part is expensive, hard to replace, or already in for repair, even small handling damage is something worth avoiding.

The Solution

For this application, we designed a soft, non-marring support component printed in TPU.

TPU is a strong candidate for this type of shop aid because it offers:

• flexibility
• surface protection
• good grip on the bench
• resistance to cracking compared to rigid plastics
• the ability to conform slightly to irregular part geometry

Instead of placing the cylinder head directly on a hard surface, the technician can set it into a custom support that helps cradle the part and reduce the chance of damage during handling.

Depending on the part and process, these printed soft supports can be designed as:

• bench cradles
• corner protectors
• contact pads
• port-side rests
• protective nests
• stackable handling supports

Why It Works

This is a simple example of how additive manufacturing can improve MRO best practices without overcomplicating the job.

A custom soft support helps by:

1. Protecting finished and machined surfaces

Cylinder heads and similar components often have surfaces that should not be resting against a hard steel table. A TPU support creates a buffer between the part and the bench.

2. Improving stability

A part that rocks or sits unevenly is harder and less safe to work on. A custom support can be shaped to hold the part in a repeatable orientation.

3. Reducing improvised handling methods

When technicians have the right support available, they are less likely to rely on rags, scrap wood, or other temporary methods.

4. Supporting better organization

These types of shop aids can be standardized by part family, repair station, or work cell so that each technician has the right support where it is needed.

5. Lowering the chance of avoidable rework

Small nicks, scratches, or handling marks may not seem like much, but avoiding preventable damage is part of running a disciplined overhaul process.

A Good Fit for MRO

This kind of application is exactly where 3D printing shines in maintenance, repair, and overhaul.

It is not always about printing the end-use part. Often the real value comes from printing the supporting tools, protective aids, and workflow improvements that make repair operations cleaner and more consistent.

Soft TPU components can be especially useful for:

• cylinder heads
• housings
• covers
• manifolds
• valve bodies
• machined castings
• painted or coated components
• assemblies that need protected staging during teardown or inspection

Small Improvement, Real Value

A printed soft support may look simple, but the impact can be real. When a shop handles the same type of part repeatedly, even a basic protective aid can improve consistency, reduce risk, and help technicians do better work.

At JaegerTech Group, we look for these kinds of practical opportunities where additive manufacturing supports MRO operations in a meaningful way. Sometimes the best solution is not a complex part. Sometimes it is a durable, custom tool that protects what matters.

If your team has a repair, overhaul, or handling problem that keeps coming up, we would be glad to help evaluate whether a custom printed support, fixture, or protective part could improve the process.