With my P2S and AMS Pro 2 I now have 2 AMS-HT modules. I occasionally want to print TPU and with TPU 95A and before the AMS - HT’s, I was direct feeding it into the print head. That sometimes is OK other times like today not = overload of print head error.
TPU-95A doesn’t seem very soft. I wonder if any TPU is actually worthwhile?
My AMS-HT could not feed it satisfactorily, I had to wait for it to cool after drying (90A or 85A) would I assume be worse to feed.
I see BL offer a TPU assist model (on back order) or Amaz have 3 different versions for more $ The more expensive one mentioned automatic adjustment of feeding force…
Can the TPU assist be added either side of P2S - I have my HT’s on the right and don’t need the external spool function.
BL instructions indicate filament goes AMS-HT >> TPU Assist >> but then what? - In to the 4-way splitter to the print head?
Or do still need to disconnect and direct feed the TPU?
In Power Feed mode AMS HT will not feed 95a or lower, some have got away with 95A, me not so lucky. You have to use the bypass port with AMS HT.
As far as I am aware there is only 1 version, and Amazon is the last place I would buy one from, too many shady players.
Yes it can go on either side with the correct bracket but right side has longer path, so more chance of issues.
The TPU Assist is still always going to go through the third feed on the back. I think of this as the middle feed.
You can use a y splitter to merge the middle and right PTFE tubes into the right nozzle but when you are using the TPU feeder, you can’t print normal filament in the right and have it automatically retract and swap.
Thanks for the response.
You made some references that I don’t understand:
Bypass port - the P2S has only one IN port. I think you reference the X2D model features.
I purchased P2S with AMS 2 Pro so it came with the 2 into one filament expander.
To use with 2x AMS-HT I used the BL 4 into 1 adapter in one of the 2 inlets - it all works fine.
That leaves me with one open or usable port.
I have ordered a spool of BL TPU for AMS that supposedly can be used by the AMS-HT without TPU assist, but I suspect it’s the hard 95A type spec which IMHO isn’t much softer than PLA in terms of elasticity/isolation - I wanted to play with 80A or similar, hence my question about the TPU assist.
If I have to disconnect the main feed to the P2S to use it with TPU assist I don’t think I’ll bother, if the assist can use my “spare” 4th port I will probably give it a whirl.
I agree about the “Bamboo” things on Amazon, but sometimes you can’t wait for BL direct, they have been better recently though.
Sorry, bypass port is on the HT. There is a normal entry for powered mode and one that bypasses this and is a direct output. This one is on the clear lid. This is one you put inside the H2D, so yes in your case it’s outside the printer right before the input.
You can use it with the 4th input however you will have to manually rewind the spool when done. Currently the printer and Feeder to not communicate like the AMS’s do. However I think that’s coming due to the extra info port on the feeder and BL desire that the AMS is a very important product differentiator. That’s my opinion based on the design and marketing push, not something I am directly aware of. For me it makes printing TPU simple and easy, no messing around and since I have the H2D I can print PETG and TPU together I the same model.
Thanks for the response
I was reading the Wiki and BL sales stuff - they show the AMS-HT working without issue using BL TPU for AMS, which I ordered for giggles. I’m assuming it will be 95A or higher.
I wanted to use TPU for isolation/vibration so softer is better.
For the softer versions the AMS-HT needs TPU assist.
I’ve sent them a note asking about the benefits (if any) of the 4-port hub vs the 4-way adapter I’m currently using.
I have the 3 AMS units sharing the 4-Way adapter - that leaves a spare port there and a spare on the 2-Way that is normally associated with the external spool.
I understand that using TPU in either passive situation will need manual feed and unload but on the P2S it’s also important to first unload the external spool in the GUI display. It tends to object about next steps if you don’t do that.
Thanks again for your help - I can see my P2S getting donated to the G.Kids in a year or so …
