What Makes the AMS HT “High Temp” and How It Works?

What Makes the AMS HT “High Temp” and How It Works?

September 12, 2025
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The world of 3D printing is expanding rapidly, and with it comes a new generation of materials that are stronger, tougher, and more heat-resistant than ever before. While printing with basic filaments like PLA or PETG is straightforward, stepping into the world of engineering-grade materials such as nylon (PA), polycarbonate (PC), ABS, ASA, and carbon-fiber composites presents a whole new challenge.

These high-performance filaments are incredibly powerful when printed correctly—but they’re also extremely sensitive to humidity and temperature fluctuations. Even a small amount of moisture absorption can cause bubbling, poor layer adhesion, or brittle parts.

That’s where the Bambu Lab AMS HT (High Temp) comes in. Unlike the AMS 2 Pro, which is designed primarily for multi-material and color printing, the AMS HT is engineered with one clear purpose: to store and feed high-temperature, moisture-sensitive filaments under ideal conditions.

🔥 What Does “High Temp” Mean in the AMS HT?

The “High Temp” in AMS HT refers to its ability to store, feed, and handle filaments that require higher environmental stability compared to standard materials like PLA or PETG.

Filaments such as PA (nylon) and PC are hygroscopic, meaning they quickly absorb moisture from the air. Even small amounts of moisture can cause:

  • Stringing and bubbling in prints

  • Weak inter-layer adhesion

  • Surface defects

  • Reduced mechanical strength

The AMS HT combats this problem by creating an enclosed, humidity-controlled environment, keeping filaments in optimal condition until the moment they’re used.

⚙️ How the AMS HT Works

The AMS HT combines smart environmental control with precision filament handling:

  1. Sealed, Controlled Environment

    • Keeps out ambient moisture and maintains a stable internal climate.

    • Extends the usable life of high-temp filaments that would otherwise degrade quickly.

  2. Optimized for Engineering Materials

    • Unlike the AMS 2 Pro, which excels in multi-material and color switching, the AMS HT is built for performance and reliability with tough technical filaments.

    • Handles Nylon (PA), Polycarbonate (PC), ABS, ASA, and composites like PA-CF and PETG-CF.

  3. Stable Feeding System

    • Reduces the risk of tangling, slipping, or under-extrusion.

    • Ensures consistent feeding during long prints, which is critical for industrial applications.

  4. Integrated with the H2D Printer

    • When paired with the Bambu Lab H2D, the AMS HT completes a professional-grade ecosystem for engineers, designers, and businesses needing functional, durable parts.

📊 AMS HT vs AMS 2 Pro: Different Tools for Different Jobs

Feature AMS HT AMS 2 Pro
Primary Use High-temp engineering filaments (Nylon, PC, ABS, ASA, CF composites) Multi-color, multi-material printing (PLA, PETG, TPU, supports)
Humidity Control Advanced, designed for hygroscopic materials Standard, designed for general-purpose use
Best Pairing H2D or other high-performance setups P1S, X1 Carbon for creative or multi-material prints
Target User Professionals, engineers, industrial users Makers, hobbyists, designers

🏆 Why the AMS HT is a Game-Changer

If you’ve ever tried printing with nylon or polycarbonate using standard material handling, you know the frustration—poor print quality, brittle results, and wasted spools.

The AMS HT eliminates those issues by giving your filaments the right environment to perform at their best. When combined with the H2D, it unlocks a level of reliability and consistency that makes engineering-grade printing truly accessible.

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