this week I’ve started my journey with 3d printing and bought a P1S. Installation of the printer was easy and fast and the first print of the benchy looked great (using the Bambu PLA).
Next I’ve printed a beer crate (using a OVERTURE PLA and the generic PLA profile) and it looked partly strange as you can see on the attached photo:
Because I’m new to the topic I don’t know where to start: I used the standard settings (so the checkbox for slower printing of the overhangs is active) and only tried to decrease the speed for printing overhangs. The result looked slightly improved but the result is still there.
Do you have any tips what I can adjust to get a better result?
Easiest fix would be to add supports.
Others have observed similar stringing when “slow down for overhangs” is enabled, with some improvement when it’s turned off. I think in your case the bridge distance is just too much to print without supports, but if you feel like it you could also experiment with bridge speeds. If you decide to experiment, I suggest to only print a small section of the model that contains a bridge, not the entire model, save yourself some filament and time.
Thank you for the quick response and your suggestions!
In the description of the model on thingiverse the creator wrote, that no support is needed for the print, so I thought that there has to be a way without it and I’m doing something wrong.
I wonder if printing without support is preferable and the “better” way or is it just a matter of taste or how much filament the printing of a model will need?
Found your model on printables. I can see a few people also noting that the print doesn’t come out great without supports. Some people saw improved results after adjusting bridge speeds so again, that may be something for you to try out. You could use their findings as your starting point.
No supports is preferred because supports require removal and may leave a worse surface finish afterwards. But in cases where a bridge is too large, support must be used, otherwise the extruded filament will end up sagging.
In your case, evidently people have managed to print it without support by adjusting bridge speed, so it is possible. Just depends if you prefer to print with support and deal with the drawbacks, or spend the time to tune the speeds to potentially get a better surface finish in the bridge areas.
Besides the already mentioned bridge printing speed, you may also need to tune up cooling.
In any case, use support, or you need to tune up the filament and the print.
There are models optimised for 3d printing, i.e. the makers designed to be easily printable. Yet, many online available models are not optimised, and depending on the complexity, you may need to add some modifications to the printing process.
For example, the Bambu Labs famous speedy benchy print entails a significant effort on slicing to achieve that quality/speed trade. If you download the STL file and slice it using default profiles, you will notice that it will require much more time, and maybe the aesthetics are not as good as the speedy one.
