So the TPU feed assist can currently feed and retract TPU via a manual button push which is great. We are 90% there towards auto-feeding but we need the last 10%, the printer being able to control the module directly.
For example i was looking at these TPU shoes, they required two TPUs or TPU + PEBA for bounce printed with PLA supports. Right now there is no way to do this on H2C. If only the printer could partially retract the TPU automatically from the right nozzle to unload it (behind the 4-1 splitter I have inside the chamber), it could feed PLA and TPU in sequence to the right nozzle.
I know H3C make all of this possible but I think bambu are missing an opportunity here with H2C.
Here is what that setup would look like:
That would be great for my H2D.
I really like PEBA. I wish Bambu would come out with some. I need to start looking for some 2.85mm PEBA now. That would be awesome. The 85A prints sooooooooo slow on the H2D. The feed assist is the only way I can get it to print with the glass still on the machine.
Yes I got some SainSmart 90A PEBA for now, hopefully bambu comes out with PEBA in both 1.75mm and softer shore in 2.85mm.
I print 85A with the assist module on H2C, using 0.6mm and 0.4mm nozzles with no reconfiguring the printer, works great but it is slow for sure, especially compared to 95A HF. Ive seen some companies start to ship 90A HF TPU, perhaps bambu will update their TPU as well.
Do you have a good profile for those. My Siraya 85 is decent but I really haven’t spent much time on it. It prints reliably but it oozes a little more than I would like.
I converted the profiles SainSmart provided for H2C use, I have not printed a lot of it yet so i dont know how well they work.
SainSmart 90A
I would probably add “wipe on retract” like I do on most TPUs for cleaner prints.
They need a TPU AMS like the AMS HT but using the TPU assist drive motor technology. I’d buy one today.
The AMS HT can feed some TPUs successfully if you tell it what it wants to hear…
Really, the TPU assist should have been designed to work like a normal AMS slot, with a 6 pin connector and be seen as a normal AMS in the system, the integration would have been so much simpler. They only would have needed to have the unit use the internal clicky switch instead of the buffer to tell the unit when to stop feeding.
