Hello,
I am new to 3D printing and have already found a lot of important information in this forum as a reader, thank you for that!
Today I printed a template from Printables. I opted for a variant with support as I wanted to try it out.
Obviously there were a few problems, as you can see in the pictures.
I printed it with a Snapmaker 2.0 with dual extruder. Sliced with Prusaslicer. I used the following basic settings:
Layer height 0.2mm
Infill 15%
Heating bed temperature: 60 degrees
PLA Breakaway filament: 220 degrees
PLA black: 205 degrees
Do you have any suggestions for me as to which settings I can change to get a better result?
Can you post a picture of the object how it is supposed to look like or even the STL file?
Also, if the bottom of the box has problems, the photo is too unsharp to assess them.
From the foreground that is sharp it seems to me that the black material did not stick well to the support (white). A wild guess would be that you selected a slicing profile that puts a bit of distance between the support and the object. That’s typical if you use the same material for support and object. But since you use different materials that are supposed to separate well, you would need to set the gap between support and object to 0.
It seems that Prusa Slicer for detachable filament suggests 0.1 mm - maybe this is the better choice rather than 0… No first-hand experience, sorry! I only once used Snapmaker breakaway PLA and it did not work well at all - it clung to the print better than I ever had with any PLA… Used PVA in the end.
Btw. - this video by Thomas Sanladerer suggests that PETG should work very well as PLA support, and it is not the first time I hear that.
Thanks for your quick reply!
As a newbie I’m only aloud to upload one picture, but your suggestion is right. The Problem is the connection between support and black. Your hint for the z-distance sounds good, I’ll try it!
Maybe your filament was not preheated properly and so it was delaminating at the small parts? Did you observe?
Not sure but what’s your preheat/up heat time for the right and left nozzle?
Alternative to heating issue would be problematic bounding to support-structure, what’s your speed for small parts or above support? (maybe set the limit of small parts a bit higher than this model-feature and get slower printing exactly there or set the speed above supports a bit lower)
Anyway, the model should be printed with petg or abs as suggested in the description.
Thanks for your suggestions!
I didn’t observe the print at this time.
I have set the free-run temperature five degrees below printing temperature, so the preheat-time is very short.
So your suggestion is to set down the speed at the red marked area in the screenshot, right?
I am aware that it should be printed in PETG oder ABS, but at the moment I only have PLA, the PETG is still out for delivery and I wanted to print something
It looks a bit like the part that is printed onto the support is just one or two layers thick - if that’s the case, I’d think this problematic. Not much places for the filament to bond. In such situations you may have success printing a bit slower and hotter. Alternatively, modify the model.
Sometimes I have the feeling that 80% of the forum are Germans
I see that you are already going slow… It reminds me, that I had several problems with Prusa Slicer and support, because Prusa Slicer reduces material flow for the first layer above the support, and past then this was not a setting you could influence. In the forums they claimed that some future version would allow to change this - nver checked. But in this case, I’d might try Cura, which is my go-to slicer in cases where Prusa Slicer is not doing what I want or annoys me otherwise…
