Sounds like you’re struggling to understand what’s being suggested. If you don’t slice the model with the correct type of filament, it won’t show up when you go to print.
I’ll try to break it down.
On the Prepare tab make sure you have your filament synchronized with what’s loaded into your printer and AMS. In my picture you can see TPU as an option, which is currently loaded on an external spool.
Next you’ll need to change the filament that your model is using. This is the most important step. If you select a PLA filament, you will not be given an option to print with the external TPU filament. You NEED to select TPU here for you to slice it with the correct filament and for it be selectable on the next step.
Now slice and print the plate. Now that you have the correct filament selected when you sliced the model, you will now have the option to choose the external TPU spool.
