Hi fellow enthusiasts, I am having a major issue trying to setup the correct profile to print TPU 82A filament, please if one of you have managed to successfully print the 82A please send me a copy of your profile setting. When I print TPU 95A with the standard non Generic profile this works fine.
Haven’t tried either, but if TPU95A works for you then TPU82A will just need even slower speeds but should print fine. Take your TPU95A profile and tune the Max Volumetric Speed down.
I have tried that, I found the problem is the filament is getting stuck in the gap between the hot end and the extruder gears
Not good as I just ordered some 70A hardness to try 
guess it will have to sit in storage until some mod is developed…
Building up patients to try a couple of more attempts at getting the 82A to print, should be ready in around 6 months LOL
I’m afraid the default tension on the gears in the extruder is going to be too high
When I print very soft TPU on my old printer, I have to lower the tension to almost next to nothing because otherwise the filament (Fiberlogy 30D in this case) gets squished too much, it goes into every hole but the hotend…
When printing other filaments as PLA, ABS,… I had to adjust the tension waay higher or the filaments would just slip inside the extruder
On the Bambu Lab printers, you cannot adjust the tension between the two extruder gears, sadly. That’s why I think it will be impossible to print very flexible TPU’s.
I do not know this for sure. Honestly I have not dared to try the Fiberlogy 30D in my X1C exactly because of this fear. If the tension on the extruder wheels could only be modified.
1 Like
This got me thinking and started a new thread specifically for tensioning the extruder wheels
I have not been able to use my bambu lab printer yet so I don’t know if this will work on the Bambu lab printer but on my other 3d printers I have used .6 nozzle and set all the line width to .50 and calibrate the flow rate this has help reduce the nozzle pressure and extruder pushing force might be a solution for the bambu lab printer.
1 Like
All will try this when I receive my 0.6 nozzles in the next 10 Months LOL
I had a roll of 82A filament for a few years, but I was never able to use it on my Ender 3; I couldn’t get nice prints from it. I tried using it on my X1C, and it worked great. I removed the top glass, and the filament hangs on a bar right above the printer and is fed directly into the extruder. In the TPU Bambu profile, I only changed the volumetric speed to 2 mm, and it printed perfectly.
My first attempt to print Filaflex TPU 82A with my X1E looked disappointing:
After a lot of testing, it prints like this:
This is how I get decent results with Recreus Filaflex 82A and a 0.4 mm nozzle:
Dry the filament at 55 °C before printing (just do it. 2 hrs are better than nothing).
Create a new filament profile: I used the profile Bambu TPU 85A @BBL X1C as a basis. Since printing TPU 85A is not supported on X1 with a 0,4 mm nozzle, it does not show up in the filament profile list in Bambu Studio.
To make it available, insert the line
"Bambu Lab X1E 0.4 nozzle", or "Bambu Lab X1C 0.4 nozzle",
in the file Bambu TPU 85A @BBL X1C.json, located in the directory where the print profiles are stored (/Users/<username>/Library/Application Support/BambuStudio/system/BBL/filament on macOS).
Back in Bambu Studio, change the following settings in the filament profile Bambu TPU 85A @BBL X1C:
filament_retraction_length: 2,5 mm
filament_retraction_speed: 2 mm/s
and save it under a different name.
Prepare the printer: remove the lid, pull the PTFE tube out of the extruder while pushing the ring down, release it from the clip which connects it to the drag chain and place it outside the printer. Place your filament roll somewhere close to and above the printer to minimize friction.
Flush the nozzle with harder TPU: Press the “Home” button. Heat the nozzle to 240 °C and insert a piece of TPU 95A directly into the extruder while tapping the “extruder down” button. Unload the filament by tapping the “extruder up” button while gently pulling the filament up. Now insert your Filaflex 82A, making sure the nozzle temperature is still at 240 °C. Take it nice and slow, tap - wait - tap - wait (watch the nozzle) to avoid clogging.
Now you are ready to print. Make sure that there is as little tension as possible on the filament. Printing directly from a filament dryer, it is a good idea to unwind some filament and stick it back into the dryer from time to time.
Unload the filament as described above. Do not use the “unload” button.
Use a dedicated nozzle for soft TPU. This saves flushing the nozzle before each print.
2 Likes