I’m new here.
I bought a Bambu X1 Carbon like two months ago and it works very good.
I switched from ABS/PET-G to ASA Filament and this also works really good, with one exception:
Itried to print this part (see pictures below). It is printed pretty well until the end where the surface is not that good and the edges are really ugly.
I printed with the generic ASA presets with the fillamentum ASA Extrafill and just turn the bed and nozzle temperature up by 10°C. So recommended temperature from like ~230-280°C to 250-255°C and bed temperature from 90 to 100°C.
I also tried the ironing function and it made the surface a little smoother and better, but still the edges are not very good.
The first 3 pictures show the latest print (the bubble on the surface are new, since using this ASA from fillamentum):
These 2 pictures show the same part, but just the upper 5mm (printed with 3DKordo ASA)
If I print the whole part the upper layers are not as smooth as the seen on the pics above:
Like RocketSled said, the flow looks to be off. You can see slight extrusion issues in the top and bottom layers. The top and bottom should be super smooth and consistent, but both of yours show signs of problems. I can’t tell if the bottom is a problem due to a dirty print surface or under/over extrusion, but something is up. The top surface is just a little off on the flow. A better matched infill could help fine tune the finish but address the flow issues first.
I tried the Tri-hex infill. I didn’t see a simple hexagonal option.
But after 9 layers before he finished the infill didn’t look so good, it was frayed on the top. It got a little better towards the end but you can see the result in pictures below.
I was thinking about a infill that would fit more to the round shape of my part like gyroid e.g. And would it also help to use more infill (I used 15-20% I think)?
I also did the the flow calibration like you recommended and the bubbles disappeared, but the surface is still not that good. I changed the flow from 0,95 (default for generic ASA) to 0,987525 (result after the 2. pass).
Maybe lower the print speed for the surface and infill? (Maybe also the acceleration?)
I got that feeling that the Bambu would like scratch over the surface when using the ironing function. Can you confirm?
Ironing makes the surface smoother, but it makes the edges of the ironed areas more ugly.
Any suggestions on how to further improve the quality of my part?
I’m not a fan of ironing on anything other than a flat surface. How many top/bottom layers are you using? Also, how does the sliced version look? Is it clean or does it also show oddities on top in the slicer?
If you have not calibrated, go to the filament settings, advanced and change the generic volumetric flow from 12 to 19-22. Maybe change the nozzle temp +5 degrees. Make sure you save it as something you know you tweaked, like ASA Flow.
You can also look at the Bambu Lab filament settings, and duplicate them onto the generic *I don’t remember if you can tweak the Bambu filament settings and save it as something else
Now do a small test print and see how it comes out.
Hi did you dry your ASA Filament before you use? I print Asa with generic ASA profile, I also print with grid infill without any problems. For tiny parts i use Brim also.
How many layers is the top surface? If you’re printing the filament too hot/no cooling, with a low enough % infill, the filament may not successfully bridge the infill, it “droops” and then the top surface will be ratty because the underlying layer(s) aren’t smooth. Increasing the layer count will fix that.
@Sticks I calibrated the flow as you can read in my last post. It helped.
@Ceppetoswerkstatt No, I didn’t. The fillament came right out of the vacuum sealed package. But I will try to dry it with the AMS as soon as I have time.
This is my latest print attempt. I tried to implement your suggestions:
I changed the temperature settings of the nozzle back to default (max temp 255 → 280 and nozzle temp from 250 → 260)
I now used 3 walls instead of 2
5 top layers instead of 3
And I changed the infill to 50% gyroid
But seriously, I think that is about as good as it will get. You may be able to hone it in a little better, but I think you’ll spend more time and plastic than its worth.
Not sure this is the best thing for your geometry, but it may be worth a try. Sand it down, and use a lighter to help return the natural color to the piece. Only takes a little burn to remove a lot of the whitening of sanding. Try it out first on a one you don’t care about though.
The quality of the curved surfaces will improve if you reduce layer height. Top surface quality may benefit from ironing, though it looks to me like extrusion still isn’t quite right. Maybe a tiny bit over-extrudy. But if this had been a part I’d printed, I’d have been pretty happy with the results.
