When printing BASF Ultrafuse metal (Now Forward AM) filaments with Bambu Lab printers (primarily the H2D, with P1S/X1 as alternatives for non-ceramic supported parts), the process aligns closely with Metal Injection Molding (MIM)—with a key distinction in green part creation. Instead of molds, Bambu Lab printers extrude BASF Ultrafuse directly to form the initial part. Post-printing, the green part requires two critical steps: debinding (removing organic binders to form a brown part) and sintering (heating in a furnace to densify the metal).

BASF (Now Forward AM) Ultrafuse offers two high-performance stainless steel options optimized for Bambu Lab printers, ideal for functional prototypes and end-use parts:

• Core advantage: Exceptional corrosion resistance

• Ideal applications: Food processing equipment, chemical industry components, high-humidity or high-temperature environments
• Key benefit: Reliable performance in harsh conditions, making it a top choice for industrial use cases

• Use the external material rack (not AMS): AMS may cause size compatibility issues with BASF Ultrafuse filaments, leading to feeding jams or inconsistent extrusion
• Avoid bending the filament excessively: BASF Ultrafuse’s metal composite structure is more rigid than PLA/TPU—gentle handling prevents breakage

• Mechanical strength: Higher tensile strength and hardness compared to 316L
• Enhanceability: Compatible with H900 heat treatment to further boost mechanical properties
• Ideal applications: Aerospace components, industrial machinery parts, structural brackets, high-stress mechanical components
• Key benefit: Versatility that bridges prototype development and production-grade parts

1. Import your STL file (we’ll use an industrial bracket as a practical example)

2. Generate the slice and review the preview:

• Use Bambu Studio’s color-coding to verify details:
• Yellow: Ceramic support interface (critical for BASF Ultrafuse’s post-processing)
• Green: Support structures
• Other colors: The part itself

3. Add a brim (when necessary) to prevent warping:

• Required for: Large parts, thick parts, or parts with minimal build plate contact
• Not needed for: Small, compact parts (e.g., thin tubes)

• BASF Ultrafuse 17-4PH is magnetic, which interferes with Bambu Lab H2D’s magnetoelectric induction nozzle offset calibration
• Disable this calibration feature before printing with 17-4PH to avoid calibration failures and print defects

Before sending, perform a final check to avoid common issues:

1. Verify nozzle material assignments (ensure "Generic ABS" is selected for BASF Ultrafuse)

2. Confirm any conflicting calibrations (e.g., magnetoelectric induction for 17-4PH) are disabled

3. Send the job to your Bambu Lab printer and monitor the first few layers:
4. Check for consistent extrusion, proper adhesion, and no warping
5. Pause and adjust if issues arise (e.g., reapply glue if the part lifts)

BASF Ultrafuse parts are not fully functional straight off the printer—post-processing is required to achieve metal properties:

1. Debinding: Remove the organic binders from the green part using a dedicated debinding system (follow BASF’s recommended debinding parameters for temperature and time)

2. Sintering: Place the brown part in a high-temperature sintering furnace (typically 1300–1400°C for stainless steel) to fuse the metal particles into a dense, solid structure

3. Optional post-treatment:

• For BASF Ultrafuse 17-4PH: Apply H900 heat treatment to maximize tensile strength and hardness
• For both materials: Polish, grind, or machine the part to achieve your desired surface finish and dimensional accuracy

By following these steps, you’ll successfully print BASF Ultrafuse metal filaments with your Bambu Lab printer. Experiment with both 316L and 17-4PH to find the perfect match for your application—whether it’s corrosion-resistant components or high-strength mechanical parts!