MartilloTech Review: Is This Heated Chamber Upgrade Worth It for Bambu Lab P1S?

If you mostly print PLA or PETG on a Bambu Lab P1S, the stock setup is usually enough. But once you move into engineering materials like PA nylon, ABS, PC, or carbon-fiber reinforced filaments, chamber temperature becomes much more important.For these materials, a stable and warmer enclosure can be the difference between consistent success and repeated failures.In this Martillotech review, the goal is to explain when this type of active chamber heating upgrade is practical for real-world printing, when it makes sense, and when it may not be necessary.A popular upgrade path for Bambu Lab P1S owners is adding an active heated chamber module. The question most users ask is simple:

Martillotech is most worth it if you regularly print engineering materials such as PA nylon, ABS, PC, or carbon-fiber / glass-fiber reinforced filaments on a Bambu Lab P1S.It is especially useful if you print larger parts where warping, corner lifting, cracking, or inconsistent layer bonding are common problems.It is less valuable if your workload is mostly PLA and PETG, or if you rarely print large, flat, high-warp parts.

In simple terms:

• Worth it: frequent engineering material printing
• Less necessary: mostly PLA / PETG
• Best use case: larger PA, ABS, PC, CF, or GF parts on a P1S

The Bambu Lab P1S already has an enclosed design, which is a major advantage compared with open-frame printers.For everyday materials, this enclosure helps a lot.The stock P1S setup is usually fine for:

• PLA
• PETG
• TPU
• Small functional parts
• General hobby printing
• Low-warp materials

However, the stock chamber is mostly passively warmed by the heated bed and internal machine heat.

In practice, this means the chamber may become warm, but it is not actively controlled in the same way as a dedicated chamber heating system.

Depending on room temperature, bed temperature, print duration, and airflow, the chamber may hover around the mid-30°C to 40°C range.

That can be acceptable for many prints, but it may not be enough for more demanding materials such as nylon, ABS, PC, or large CF-reinforced parts.

Martillotech adds an active chamber heating solution to the Bambu Lab P1S.

Instead of relying only on passive heat from the bed, the system helps warm the enclosure more directly and hold the chamber temperature more consistently.

In real-world printing, this can bring several benefits:

In real-world use, owners typically report benefits such as:

• Faster chamber warm-up
• More stable enclosure temperature
• Better reliability with warp-prone materialsReduced risk of corner lifting
• Improved consistency for larger engineering parts
• Better printing conditions for PA, ABS, PC, CF, and GF blends

The biggest value is not that it makes every print perfect.The value is that it gives difficult materials a more controlled environment.

Nylon and carbon-fiber reinforced nylon are common reasons why P1S users consider a Martillotech upgrade.

Materials such as PA6-CF, PAHT-CF, and other nylon blends can be sensitive to temperature changes during printing.A warmer chamber can help with:

• Reducing warping
• Improving layer bonding consistency
• Keeping larger parts more dimensionally stable
• Reducing cracking or splitting on tall prints
• Improving repeatability across different room temperatures

A heated chamber helps, but it is not a magic fix.

However, Martillotech does not replace the basics of nylon printing.

You still need:

• Proper filament drying
• Correct bed surface
• Good bed adhesion
• Suitable nozzle temperature
• Controlled cooling
• A hardened nozzle for abrasive CF/GF filaments
• A heated chamber helps, but it is not a magic fix.

Most active chamber heater kits require:

• Opening the machine panels
• Routing power and control connections
• Mounting a heater and ducting module

The specifics vary by kit and printer version. If you are not comfortable working inside an enclosed printer, it is safer to follow the manufacturer’s official installation video or have an experienced user help.

Any enclosure heater increases internal temperatures. That can affect:

• Printed part cooling behavior
• Electronics and long-term component wear
• Filament behavior in the enclosure

Results and safety depend on many factors such as firmware version, material, installation quality, and ambient environment. Always monitor initial prints after installing a heated chamber system.

Use this checklist:

• Your prints are mostly PLA and PETG
• You print small parts that rarely warp
• You want a plug-and-play upgrade with zero installation work

If you decide a P1S chamber heater upgrade fits your needs, Call3D focuses on Bambu Lab-only aftermarket upgrades and ships globally by air.