Hi Guys! I have an X1C and I suddenly started having this problem wherein the supports inside the model keep on falling off. I use this printer to print models I sell and I cannot orient the model in a different without taking a hit in quality as there are some engravings in the print. I have tried re-calibrating, cleaning the nozzle and rods, placing the printer on the floor, drying the filament and enabling Z-hop with no success. Any idea why this is suddenly happening? I only got my X1C 3 weeks ago and have been printing for 150 hours now. I am wondering what I did to have it happen so suddenly cause I have been printing the same thing over and over for weeks and suddenly the supports inside the print start falling off. Could it be misalignment of the Z screws or the PLA I
got use from Kingroon?
I have not had much luck with support sitting on the model. I think the lower interface definition is rather buggy.
So I usually try to have tree supports on the build plate only and paint the surfaces to be supported.
Rarely however, trees can not reach. In those rare cases, going for classical or hybrid support may help (at the cost of more difficult removal).
Does this happen with any other filament? Also, how many spools have you gone through of this filament type and have you attempted to dry the filament? Even PLA can succumb to moisture issues.
Alternatively, you can use modifiers to thicken the area where the supports adhere to but in your use-case, it may affect the model appearance. If you’re looking to you’re 3D printer as a source of commerce, then you’ll want to optimize for speed and simplicity. That means figuring out the filament problem and/or changing your model to be 3D Printer-friendly.
I have tried hybrid support and it made the model worse. As you had guessed, the tree support is having a hard time reaching that part and I am not worried about having it on the base of the inner model but I dont know what setting to change to have the base support inside the model be sturdier or having a wider brim but inside the model
I have some sunlu filament here and I have not tried it yet. I am not sure whether it could be the filament cause I was using the same filament 2 weeks ago and it printed the file fine. I was thinking of adding supports in the model itself but I think it would ruin the aesthetic I was going for. Could there be any other issue why it would always knock the tree support at that part of the model? or is there a setting I can increase to have the base of the tree support in the model be more wide/sturdy? I tried increasing the brim but it only worked on the support on the build plate
Since that can be a bit much (or too little regarding bottom interfaces which do not yet work as desired):
Try this first:
It should generate a grid type structure as support within the model. This uses more filament and can be a bit of a pain to remove, but you need to first get reliable quality before trying to get this quality more efficiently and reliably or playing around with other support types and settings.
Observe the print: The upper interface layer can become prone to curling which increases the likelyhood of knocking over weak supports.
If you are still not able to complete the print due to support being knocked over, you can reduce the interface distances for better adhesion. Of course, that will also make removal more difficult. And its effectiveness depends on the actual fracture location. Your initial image hinted at the interface being weak rather than the support itself.
Whatever you do though, ensure that your filament is thoroughly dried first. Moisture in the filament alters its rheology and makes it more likely to curl. Moisture uptake could also explain why it worked in the past and now does not. Filament Drying Recommendations | Bambu Lab Wiki
Hi! Thanks so much for the info but I used Manual tree auto supports. I dont have problem with supports that are stuck to the print but the ones stuck to the model. They seem to be knocked over super simply and it always happens on the same spot. I tried normal supports but it ended up clinging to the print too much which led to a worse product that I had to sell. My main issue is that it just started happening this week and I cant for the life of me know whats wrong since I didnt even change the model. Literally exact same settings, file, and filament.
This is the number one trap I see both new and sometimes seasoned folks fall into: assuming that just because something worked recently, it will work exactly the same way each time. 3D filament and 3D printing are counterintuitive. They have as much in common with baking as with engineering. Differences in temperature or humidity can have a significant impact on everything from filament behavior to minor variations in belt movement. Although Bambu’s technology is best-in-class for compensating for these factors, your case—and many others—proves that issues can still arise.
There is a setting within tree supports to thicken the base.
I actually tried this and it was close to succeeding but failed at the top of the branch! What worked the other day was slowing down the print but it works 90% of the time. The humidity has gone up since it has been the rainy season and I actually think that could be the reason cause just the general increase in humidity. But other than that, there is nothing else I am missing right? Is there a way to have the door closed while printing pla by upgrading the fans?
Thanks for sharing that. This is important information for you to note.
Here’s a thought: keep a sticky note on or near the spool with the weight and date from the last time you printed. Then, weigh the spool before each new print. This way, you can track how much moisture the spool may have absorbed since its last use.
I’ve found this helpful for storing filaments. Although I use moisture indicator cards in my long-term storage bags to monitor humidity, I’ve also started using sticky notes on the spool to log weights and dates for cross-verification. While this may seem a bit OCD, you don’t need to do it for every filament—but wouldn’t it be nice to know if your filament has gained a little “weight” since last time?
While that may seem like an appealing idea. There isn’t any proof that this effort will yield results. Oh, yes, you will find lots of opinions but no proof.
I actually dried it recently and it had helped but it still knocked it down but I slowed down the speed to 100 mms and acceleration to 3000 for outer walls. Though I am gonna take your advice on putting a sticky note! Thanks for the great idea :D. So what you are telling me is that it is the filament and there is nothing wrong with the printer or settings correct?
I would never make a blanket statement that there is nothing wrong mechanically. Mechanical issues do happen but are rare on new machines, especially if the printer hasn’t been mishandled. Too often, I see people jump to adjustments with a screwdriver before exhausting the answers found at the keyboard such as the slicer settings.
To paraphrase Occam’s Razer:
“Before seeking complexity, consider simplicity—often, the simplest explanation is the closest to truth”.
