Already had A1 mini, now also a new P1S owner, just put it together last night.
Looking at Bambu filament profiles – meaning the system presets that you can not edit.
Using Bambu PLA Basic as an example - on the A1 mini the Part cooling fan values are -
Min fan speed threshold: 60% Layer time: 80
Max fan speed threshold: 80% Layer time: 6
on the P1S every flavor of PLA (Basic, Matte, etc.) the Part cooling fan values are -
Min fan speed threshold: 100% Layer time: 100
Max fan speed threshold: 100% Layer time: 4 AND the auxiliary part cooling fan is 70%
I’m not understanding why the A1mini will only give a max of 80% fan for generic flat layers but the same filament on a P1S is full blast plus aux fan. I know PLA takes cooling well but my own experience (granted, on a Neptune 4) says this is not always good. The model for the K-Studio build plate cleaner that lots of folks use printed with lots of fan and the “screw stem” breaks off pretty easy but is much stronger without full blast cooling.
It’s just PLA - the cooling values for PETG are different between the two printers but only slightly with the P1S being set for 10% less fan than the A1 mini.
Maybe someone can help me understand why there is such a difference in the values provided by Bambu for their filament for their printers ?
I guess it is about open printer (A1 mini) vs boxed printer (P1S). Of course the fan has to do more work in a closed environment.
You can open the front door (or even the top cover) and reduce the fan speed if you want to.
I had that same train of thought thinking the same thing until I looked at the profiles for Bambu PETG HF.
Bambu PETG HF P1S -
Min fan speed threshold: 20% Layer time: 20
Max fan speed threshold: 40% Layer time: 10
Bambu PETG HF A1 mini -
Min fan speed threshold: 30% Layer time: 15
Max fan speed threshold: 50% Layer time: 7
For a filament that is much more susceptible to having issues with too much cooling, the P1S profile is set for lower fan than the A1 mini which to me would imply that the P1S part cooling fan is better/stronger than the A1 mini - so it didn’t make sense to me how it could be both better at cooling and worse at cooling … which is what prompted me to make a post because I don’t get it, lol.
Do you have any print issue? I got a P1S on BF and it was working fine for 2 weeks. Now every print I have is bad. I open a support ticket with BL and BL world class support took forever to reply back and just get back to me to clean my noozle and extruder, which I have done twice and there is no clog. I do notice the fan running at 100% and now start suspecting it is the fan speed that is messing up the print.
I changed my cooling settings and never ran the P1S at 100 fan all the time - but was curious as to the logic that came to the conclusion of the 100%.
Here’s what I use:
I tried similar setting in Bambu Studio no change still get the bad print. I also downloaded OrcaSlicer and used your setting same result. This is very discouraging one of the reason I pick Bambu Lab printer is all the good reviews on it. However their support is unacceptable for $500+ printer.
I found the replies to another topic that you made. I would suggest creating a topic about your issue with pictures, details and stuff. This way the topic is specific to your issue and printed model example and new – not part of a topic from 5 days ago that people have stopped looking at. If you state an issue as a reply to an existing topic, someone might open the topic see the original post and feel they have nothing to contribute and move on … and never see your issue/picture which they would have recognized and had a solution for. More than one issue in a topic just gets messy.
Another good place to ask is the Reddit fix my print sub. Just doing a search in that sub you may find your scenario and how someone resolved it. https://www.reddit.com/r/FixMyPrint
3D printing, in the big picture sense is still a pretty new technology. Consumer level printers at a price that didn’t empty a bank account has only existed for … .10ish years. 3D printing is very much a hobby vs. a 3D printer being an appliance like a microwave or a laser printer that you never have to think about. You’ve expressed displeasure with Bambu twice in this thread and once in the other thread and so I have to wonder if your expectations are in line with where the industry is at this point. As a hobby expect lots of things to require hands-on tinkering and your best resources are generally the community. You’re going to get 10x more (in the general sense of the word more) from the community than you will get from whoever made the piece of hardware you are using. These are the reasons my own dive into the “smart home” concept hasn’t gone far – it’s very much a hobby and the tinkering and figuring things out took too much from my enjoyment and so decided it wasn’t the hobby for me with the current level of technology.
I wanted to start my own topic for my issue and don’t mean to hijack your topic either. Because I am a new user starting a new topic is not allow yet. I have to keep replying to earn my status to do so. Once I have the access I will start my own topic. Thanks.
TLDR version: Spend 10 minutes or more reading at least 30 posts in five topics to raise your Trust Level to Basic, which allows starting new topics and posting pictures.
I starting turning down fan speed for PLA because i had prints that failed multiple times because the overhang layers wouldn’t stick to the print on various models.
To be fair, the overhang layers where extremely long, 200mm and up. Those layers where just loosely flying around because the fan blasted them away from the print before they could adhere properly. After turning down the part fan to 70 and aux to 50, not only did the layers stick, it looked perfect.
Other than that, layer adhesion was stronger for me with less cooling.
