This guide provides detailed instructions and important notes for using the H2D/H2C device to perform multi-material printing with different filaments. Before printing, we recommend checking the Wiki page for each specific filament type to obtain more comprehensive information.

Because PVA has a relatively low heat-deflection temperature, when the heatbed temperature is set to 70°C for PETG printing, using both hotends simultaneously can easily lead to nozzle clogging.

💡 Note:

"Simultaneous printing" here refers to using the left hotend for PVA and the right hotend for PETG (or vice versa);

If using the AMS system, you may print PETG using only the right hotend while using PVA as the support material;

Do not use PVA on the left hotend to support PETG.

Based on extensive testing data from Bambu Lab, and to ensure stable operation of filaments without softening or deformation inside the printer, we have categorized filaments for the H2D/H2C device into the following groups:

Category Characteristics Common Types
High-Temperature Filaments   Require printing at the highest possible chamber temperature to ensure sufficient interlayer bonding strength and effectively control shrinkage and other critical print quality parameters.   ABS, ASA, ASA-CF, PC, PA, PA-CF, PA-GF, PA6-CF, PET-CF, PPS, PPS-CF, PPA-CF, PPA-GF, ABS-GF, ASA-Aero  
Medium-Temperature Filaments   Offer excellent heat resistance and can achieve high print quality without requiring chamber heating.   HIPS, PE, PP, EVA, PE-CF, PP-CF, PP-GF, PHA  
Low-Temperature Filaments   Have low heat-deflection temperatures. When the chamber temperature exceeds 45°C, they may soften inside the extruder or hotend, causing clogging. Therefore, they are strictly prohibited in high-temperature chamber environments.   PLA, PETG, PETG-CF, TPU, TPU-AMS, PLA-CF, PLA-Aero, PVA, BVOH, PCTG  
📌Third-Party Filament Compatibility Recommendations：
For non-official filaments, formulation differences may result in significant variations in heat deflection temperature even within the same base filament:

Standard Reference: It is recommended to refer to the ISO 75 standard (under 1.8MPa load). If the heat deflection temperature is below 80°C, it should be treated as a low-temperature filament.

Manufacturer Consultation: Contact the filament supplier directly for official classification recommendations to ensure optimal printing compatibility.

🔥 Tips for High, Medium, and Low Temperature Filament Printing:

High-temperature and low-temperature filaments must not be printed together. Bambu Studio enforces this restriction during slicing and prevents mixing them in a single print job.

When printing high-temperature and medium-temperature filaments together, caution must be taken, as medium-temperature filaments may soften, increasing the risk of extruder or nozzle clogging and damage. It is recommended to carefully adjust the chamber temperature to avoid clogging caused by filament softening during the print.

We hope the detailed guide provided has been helpful and informative.

If this guide does not solve your problem, please submit a technical ticket, we will answer your questions and provide assistance.
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