ASA Short Version - 0.16 Layer Height, Inner Wall Speed 180, Bed 100
Designer
23 min
1 plate
4.8(51)
ASA Extended Version - 0.16 Layer Height, Inner Wall Speed 180, Bed 100
Designer
25 min
1 plate
4.9(32)
ABS Short Version - 0.16 Layer Height, Inner Wall Speed 190, Bed 100
Designer
23 min
1 plate
4.8(77)
Click to see more
Boost
1329
2715
658
4
3.6 k
2.6 k
Released
Description
I update, revise and improve my design for my fixes very often. Please only use my Print Profile (Labelled as Designer or SPStudio) to ensure this fix is updated & work well. Profile with Non-Designer tags may be of poor functionality or non updated model.
Click on Like if this model helped you in some way. It is very important and will help increase the exposure of this design to more people who might need it. Cheers!
This is an experimental fix, although it have been tested more than 90k times in total, effectiveness will varies. Please use new V2 version of this fix for increased effectiveness.
I do advise you try all my other Ams fixes, if those still doesn't solve your problem then you can try out this fix as an last resort. Most people got their problem solved even before requiring this fix.You can easily find the rest of my Ams fixes by clicking on my Profile then go to the Collection tab.
New and Improved V2 Versions for the Ams Buffer Fix Before Buffer and After Buffer have just been released. Do check them out in my profile to see what are the improvement. Thank you for your continuous support.
Update 28 Nov 11pm SGT:
Choose Extended version - if you are using any riser or your tp glass is not directly resting on the frame of the printer
Choose Shorter version - if your tp Glass is directly on the frame of the printer with no riser or anything in between the glass and the Frame of the printer.
The Extended height of the fix is used to compensate for people who is using a riser or anything in between the glass and the frame.
Introduction
Failed to pull back filament error can be caused by multiple different variables & factors. This is a part of an series of Ams fixes that i have designed which can complement each other when used together. I do suggest you install all my fixes together for the 0ptimal effect to help your filament travel properly across the entire system which in turn can help improve, reduce or remove any potential Ams errors.
I have grouped all fixes into their respective Collection for ease of searching what to install.
V2 Collection are improvements done on the shortcoming of V1 Collection. Feel free to try V2 Collection and if it doesn't work properly then you can try the V1 Collection. You can easily find each of the Collection by clicking on the Collections tab on my profile.
Unfortunately there isn't a single fix that can 100% work for everyone. What works for others, may not work for you but my fixes is definately a great place to start and have worked for majority of the users. My fixes are precisely measured then modelled. A Proper Fix would have the highest chance to reduce or solve the error.
If you are too bored to read the entire lengthy write up explaining the need for this fix, here is the TL:DR.
What is this? Extruder Ams Filament Pull Back Fix will correct and maintain a nearly 100% straight line to move the filament in and out of the extruder. This will also reducing wear on the Ptfe tube. Its design allow the filament to travel in the most smooth, least amount of friction and pressure for the proper angle to go into and exit the extruder thus greatly reducing the possibility of an Failed To Retract Filament error or similar errors from popping up.
Who needs this fix? I believe that anyone With or Without a Ams or even a modded Hydra Ams would benefit from this fix / enhancement regardless of do you have any problem or errors with the Ams / Printer or you do side or back spool loading.
Have this fix been tested?
This fix have been tested for on 1 X1C, 1 P1P and 2 P1S for about 96500 retractions so far as of this listing.
Why choose this fix?
ez to print
Dimensionally accurate to allow the Ptfe to be straight at the extruder part
Tested and measured to get the most optimal height and size to be fitted on the extruder plate yet light enough to prevents any problems that might negatively affect the movement of the Print Head.
Well Supported as its designed to be fixed with the original screws, not free floating thus removing any possibility of the Ptfe tube misaligning during movement.
Compatible with all Bambu Printers
Compatible with riser or non riser users it will work for any and all
Unlike the common similar fixes, this fix is designed to avoid rotating with the Ptfe tube changing directions when the print head moves, when there is movement and rotation then chances of misalignment may follows. This fix is fixated on the print head itself, no matter how the Ptfe tube move it will not affected the alignment of the inwards angle of the Ptfe tube so it stays straight.
This can and will allow the filament go into and exit the extruder with a smooth movement with the least amount of friction.
Which to choose?
If you print mainly Abs / Asa or other high temp material, please choose the ABS / ASA Print Profile
If you print mainly Pla / Petg, then the Petg Print Profile will work fine.
Abs / Asa can wrap during printing. Glue stick would help. Please ensure your print of the fix is flat at the base before install.
PETG will not be affected.
Installation Video
Set the fix in place lightly first then align and adjust it to sit in the groove at the back plate. Notice how the fix just resting on tp of the Ptfe connector. Then slowly screw back the screws in a left right rotation motion till you feel some tension then stop.
The fix should not move up and down freely. The install video will show you the proper tightness of the fix.
Do not jam in the screws all the way or screw it in too tightly. Its unnecessary.
There must be a very small gap in between the fix and the Ptfe Connector Head.
Do not press the fix down pressing the Ptfe Connector Head down then screw in.Please do not do that.
Just lightly rest the fix on tp of the Ptfe Connector Head , there are groove behind the fix that will match the rear plate, just sit it in and screw in lightly left right rotation, That's all.
Important. It should not be too tight or too loose. Follow this video for just right amount of movement.
Important Notes:
Note 1: This is compatible with any P1P P1S X1C with or without Ams.
Note 2: Please follow the instructional video carefully its very important.
Note 3: Hydra or Non Modified Ams can all benefit from this fix.
Note 4: Please do NOT overtighten the screws. Just finger tight then go back 1 full round. That would be just enough.
Note 5: Align the fix then lightly screw in one screw follow by the next then slowly screw both screws in bit by bit turn by turn. Do not screw in either side fully then the other side fully. This is wrong.
Note 6: You need to ensure there is a gap between the fix and the Extruder Head. Its a must. Scroll down for details
Note 7: Do ensure the Ptfe is inserted all the way into the extruder after you installed the fix.
Note 8: Please check and follow installation video below.
What Mod / Fixes / Enhancement do i offer?
Please don't download the wrong one. Only those in the photos below is designed by me who painstakingly took a lot of time to measure carefully and design just to get it working. #SupportOriginal Love you guys for all the support so far!
Friction - The cause of most of the Ams filament failed to retract problem.
As shown in the following photo, the Ptfe tube that go into the extruder may and is often bent in an angle. It creates bends or pressure on the shape of the Ptfe tube in turn creates a lot of friction, as the Printer and Ams is equipped with multiple sensors, these friction will cause filament not passing through the Ams to the printer smoothly and thus causing the Ams Failed To Retract Filament Error and similarly related errors.
So what is the possible solution to the problem? Firstly we need to reduce friction for filament passing through Ptfe tubes? Simple! If we optimise the angle of the Ptfe it will allow the filament to enter and exit the Extruder with the least amount of friction and pressure.
So what i have created to solve the problem? I have made a fix that will extend and hold the Ptfe in place at the extruder for a proper exit angle when filament is push or pull out of the extruder.
What do i need in additional to installing this printed fix part? Nothing, just remove the screws from the extruder plate and install the new upgraded fix that's all. See the installation video for info.
Removal Video:
Loosen the 2 screws just enough for the fix to wobble then press down and release the Ptfe tube the remove the fix.
Additional Notes
The error itself is complicated and non definitive. Whatever cause the error today might not be the same area that cause the error again, same with person A and Person B setup, as the error itself is mainly due to tension with friction triggering the sensors in the machine.
I would suggest you download and try and install all my fixes together for the proper effect as together they will ensure a smooth delivery of the filament with much lesser friction (read write ups) and hopefully that will help and reduce or resolve the error. If you use only one or 2 of the fixes the error could still happen as there are still other area might still be causing excessive friction.
The brim helps prevent wrapping. Seldom does warpping happens in PETG but as these are designed with General Public in mind. So some people newer to 3d printing may not know what is a warp or may have plate that are dirty, the brim just help reduce a possible point of bad print. But thank you i will keep your suggestion in mind.
Fair enough, but I have to reduce stars since the screw head fit is too tight. I printed in two different brands of PETG and did a flow calibration with one of them, and the counterbored slot for the screw head is too tight. The tight fit prevents the screw heads' ability to move vertically in the slow, and it prevents the print from seating correctly against the print head.
See the photos comparing the original part with my printed parts. Note, I am printing one last time with Bambu PETG basic
hello, I don't know what happened, now it's only down to 3 stars because it says that the printing was not finished, it's very strange, I'm going to print it again to see if it will let me put the 5 stars.
ASA Short Version - 0.16 Layer Height, Inner Wall Speed 180, Bed 100
it printed great with the stock 0.16 layer height but I’m not seeing any improvement with the FAILED TO PULL BACK FILAMENT MESSAGE it’s still happening every print at the very end of it
Failed to pull back filament error can be caused by many
different factors which is why i have a whole package of fixes
from the AMS to the extruder to try and reduce and remove
and improve on areas that might cause the error to occur
would suggest you download to try and install all my fixes
TOGETHER for the best effect. If you use only one or 2 of the
fixes the error could still happen as there are still other area
might still be causing excessive friction.
Unfortunately there is not one single fix that can 100% work
for everyone. No one can promise that as every system is
different. Not even Bambu themselves. What works for others
may not work for you but my fixes is definately a great place
to start and have worked from majority of the users.
Today's X1 firmware drop mentions this error specifically happening at the end of prints. I run into this at the end of prints on my P1S machines as well. Might just be software!
so i have to say the piece does work but the extended version is just a few mm to tall for the X1c. i can see it and hear it rubbing on the frame when the toolhead goes to cut the filament
ASA Extended Version - 0.16 Layer Height, Inner Wall Speed 180, Bed 100
very easy to print with asa profile.
looking for some impovment with for my ams problem. i print the high version, is there any problem if i havent the upper glass riser?
with the high version the ptfe tube strip a lot on the top glass, and the curve it makes is too narrow, it gives me problems with the insertion of the filament.
I think it works better with ams raiser.
Now i try with the short version.
Maybe you can fix this little problem!
thanks!
U can try it now. V2 wont be soon. I will only upload it if it is perfect enough. Make sure u install all my other fixes first before installing this last.
Very good job, so far best results since a long time. Many thanks. For my part, I have still one or two issues, I think I need at least 1 centimeter higher pipe to be sure the filament is well pulled back. Is it possible to have the step file to make my own test please ? Or are you able to produce it please ? Thank for your time and your dedication.
A new extended version will be uploaded within 4 hours. i am testing it. Cant just do a scale up from STEP because the shape of the internal wall matters a lot on how this fix can work better. Please check back in 4 hours.
could u model the shaft to be a little taller? seems like I'm still getting a slight pinch point, especially when retracting filament at the poop chute area
Hi the taller model is now updated. Please try it. Thank you.
0
Reply
License
This work is licensed under a Standard Digital File License.
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.
