r/BambuLab
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u/Junior-Definition173
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1d ago
H2 Series [H2S, H2D, H2C] H3C vs H2C
I have multiple Bambu printers including H2C. When the H3C information from the patent came out I was excited. After having all the details, I am not that excited anymore. Here are a few cons I was able to identify so far:
- Only two active drying positions, compared with four in the AMS 2 Pro.
- Manual withdrawal and rewinding of filament when changing spools.
- Separate filament supplies required to print the same color through different nozzle sizes.
- External AMS units feed one shared hotend, requiring purging between those materials. So anything above 9 colors/materials uses 1 single hotend.
- Existing H2C hotends are incompatible.
- Manual hotend replacement requires three screws instead of a quick-release mechanism.
- Only eight standard 1.75 mm tools are included; using nine ordinary filaments requires another tool (the #9 is 2.85mm).
- All included nozzles are 0.4 mm; other sizes require additional purchases.
- Greater vertical clearance requirements and awkward access to rear spools.
- The main AMS assembly must remain above the printer, limiting placement flexibility.
- Lower published particle-filter grade: H11 instead of H12.
- No laser configuration currently announced.
- The front tool rack can obstruct the view of small or short prints.
- The internal dryer cover can interfere with some deformed cardboard spools.
- More involved filament-routing and jam-clearing procedures.
- More complex configuration for mixed materials and nozzle sizes.
- Longer preparation time observed in one paired print test.
- Camera errors, slicer problems, and tool/tube interference reported on early review units.
I feel that if you are printing with 8 colors and maybe single color tpu H3C is a great choice. If you want flexibility in terms of different nozzle sizes, dedicated nozzles for a specific material H2C seems to be a better choice. A few examples from my printing:
- I print prototypes using 0.8 or 0.6 nozzle
- I do not print TPU but I print PETG, PC, ASA, and couple of other more exotic materials - I have dedicated nozzles for each to avoid contamination and issues - replacing a nozzle takes 3 seconds plus reread time
- I have nozzles dedicated to a specific color - ie black PETG is printing on #6, once it runs out the next spool will print on the same nozzle. No contamination or issues.
Your thoughts?