This fix is for users with one end of the Bambu Ams Cable have a 90 degree bend. If one of your connectors end have an 90 degree angle bend then please carry on and read.
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!
Announcement
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.
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? V2 Ams Buffer Ptfe Right Guide Mount Fix will correct and maintain a nearly 100% straight line when the Ptfe tube exit the Ams buffer to move into the printer extruder. Its design is accurately measured to let the Ptfe tube be as level as possible at the Ams buffer to allow the most smooth, least amount of friction and pressure for the proper angle to go into 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 a Ams would benefit from this fix / enhancement regardless of do you have any problem or errors with the Ams / Printer. This will allow your Ptfe tube to be nearly 100% straight (laser and manually measured) when it enter or exit the Ams Buffer. In theory, there are only advantages and benefits after installing. There are literally no disadvantage to this fix.
Extremely ez installation yet still precise and accurate
Very well supported with an clever groove on the fix pushing and stabilizing the fix onto the rear panel with the tension by lock clip below the cable connector
Precise measurement to hold Ptfe tube straight for reduced friction of filament moving through. See installation video how i casually just throw a spirit measure after install and its just levelled itself.
Greatly help to reduce Ptfe wear and tear with its small surface contact
Friction is further reduced when the Ptfe move through the fix, another benefit of its small contact area
Use it with or without the rear spool holder without affecting its alignment
No screws needed for the install
No possibility for wrong installation with its new design
Uses less than 6 gram of filament
Will not work if you are using the Multi Ams Hub. (If you are using the Ams Hub for the Mini as an splitter it is ok and will work properly for you)
Why choose this fix?
Surely there are similar fixes in the market but most of them are merely holders instead of proper fixes, I will explain why.
Current offerings have problems like complicated installation, an flimsy clip on design with totally no support and a really huge hole for the Ptfe to pass through offering 0 proper alignment at all, poor or non existent support, bulky, uses screws, some cannot be used with rear spool holder and most of them create wear due to long travel which the Ptfe have to go through. Many of the fixes that doesn't even try to align the Ptfe travel properly at all
So this V2 solved all of these issue with a tiny 5.5grAms of Filament.
Remember like all our other fixes, We don't want any movement to pass through filament as it wears them down and if we really have to then i made the contact surface small so it will reduce the wear drastically.
Once again as with all my fixes, this is very precisely measured and designed. I have taken measurements down to 0.10 degree (measuring the outgoing angle out of the buffer) despite stating this fix as nearly 100% straight because there could be as small as maybe below 1mm deviations with every single machine due mass production.
The fix will hold the Ptfe Tube level with the Ams Buffer to allow the filament to pass through with a smooth movement with the least amount of friction.
Prerequisites
Before install, Please check if your connector looks like this. Most of us should have this 90 degree connector version that connect to the printer. If you have this please carry on with the install.
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. 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 go through the Ams buffer with the least amount of friction and pressure.
What do i need in additional to installing this printed fix part? Nothing.
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.
not sure if it the angle of the photo but do make sure the connector is firmly sitting and fully seated on all ends inside the fix. Thank you for the support.
I printed this and it's corresponding part to help with my AMS feeding issues. So far so good after installing both parts.
Printed in Giantarm silver PETG to "match" my X1C.
Thank you for putting in all your effort to help the community. It is greatly appreciated!
After see we have made two versions (one for 90 and one "normal") i have print the two versions xD The second (like the first) have a very good profil et fit perfectly. I hope it's work for me and fix the error ♥
Came out perfect! Used supports and Bambi green PLA. Accidentally printed the straight version first. make sure you get your AMS unboxed before printing one of the 2 versions up.
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