Bambu TPU for AMS use with AMS Lite questions

Bambu Lab AMS AMS lite
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I have a few questions about Bambu TPU for AMS. First, they don’t list the hardness value for this filament. Really wish they would provide a hardness value. Searching online gives a hardness value of 68D, which is pretty soft but not sure how accurate this is. In reality, how hard/soft is it when printed? How does it compare with standard Bambu TPU (which I believe has a hardness value of 95D)? Are there any problems when using it on the AMS Lite? Not sure if anyone here has experience with Flashforge Flexible PLA but if so, would be interested to know how this compares with that (assuming Flashforge is much harder since it’s rated at 92D).

If the AMS Lite can handle 68D, why couldn’t it use most flexible filaments (at least all those above 68D)?

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I have heard that it’s much harder then the Bambu 95A TPU

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TPU hardness scale

  • Soft TPU: Shore 85A–88A, very flexible and elastic
  • Medium TPU: Shore 90A, flexible and durable
  • Hard TPU: Shore 95A, flexible but more rigid

Using the scale

The Shore A scale is most commonly used for measuring thermoplastic elastomers, such as TPU. The Shore D scale is used for measuring the hardest materials.

The standard stuff is 95A, much softer than the 68D rating of the AMS approved stuff.

Another worthwhile reference from smooth-on.com site here

durometerchart
durometerchart1280×414 181 KB

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TPU for AMS is much harder and stiffer than TPU 95A HF. It provides a rubber-like finish, making it useful for certain applications as well.