TPU 95A HF on H2D: Correct Filament setup and Inlet?

Bambu Lab H2 Series
1

I’m new to 3D printing and I’m preparing to run my first TPU print using TPU 95A HF on an H2D.

I’ve searched the forum, Facebook groups, and the Bambu Lab Wiki. Most of what I’m finding focuses on softer TPU (85A/90A) and top-feed setups, but I’m still unclear on the correct approach specifically for TPU 95A HF on the H2D.

My setup:

Printer: H2D, AMS: AMS HT + AMS 2 Pro

What I’m really trying to understand is:

  1. Which filament path should I use for TPU 95A HF? (side spool, dedicated TPU inlet, rear inlet, etc.)

  2. Which outlet/port on the H2D is recommended, especially when AMS units are connected?

  3. What is the correct setup process before starting the print? (how to physically route the filament, which inlet to select in the UI, whether AMS needs to be disconnected/disabled, and any prep steps before hitting “print”).

I mainly want to make sure I’m feeding the filament the right way from the start so I don’t create avoidable issues.

I will really appreciate the help.

Thanks

2

It depends a bit on how new you are to all of this.
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I run anything from TPU/PEBA 65A up to 95A through my AMS HT in bypass mode, then into the printer’s bypass and through PTFE tubes. However, this setup requires a solid understanding of what causes friction in the system, because softer filaments can jam easily anywhere along the PTFE path.
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To keep things simple at first, and since you specifically mention TPU 95A HF, I would feed it from an external spool directly into the printer’s bypass. There are plenty of more advanced setups that avoid constantly swapping PTFE tubes, but to start out you can just disconnect the appropriate PTFE from the buffer and route it through your bypass.
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That should work reliably as long as your TPU is properly dried.
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