Difference between profiles
Hey everybody, I am wondering what the difference between the "Speed" and "Structural" settings are. I can see that structural takes longer, but why? What's the advantage of it. I guess I could click through all the menues and check which settings are different, but I am not that well versed in all the settings that I'd easily understand the differences. Can someone explain it to me in simple words, please? 😀
As a rule of thumb: Fast printing makes weak parts, ok for trinkets perhaps but not for anything structural.
Functional or structural parts must be printed slowly enough that the layers have time to weld together well. Even then it pays to consider the direction of print head travel as prints tend to be stronger across the lay and weaker between the layers.
Anyone fretting about faster and faster printing is not planning to make anything useful.
Cheerio,
RE:
Thanks, that was the dumbed down explanation that I needed. 🙂
RE: Difference between profiles
In the print instructions of a part that is highly stressed, it was specified that you should only print in Silent Mode with Bambulab printer, otherwise the strength is too low.
RE: Difference between profiles
You can compare profiles and see the differentials within Prusaslicer : https://help.prusa3d.com/article/compare-presets_301482
In general they reduced ( some settings by quite a bit ) both acceleration and speed.
RE: Difference between profiles
The hint with the comparison is great, thanks!
RE: Difference between profiles
Sorry for the question. But can you use the profiles that are not Input Shaper, even if the IS firmware is installed on the printer? Does it make any sense to do this?
RE: Difference between profiles
Hey everybody, I am wondering what the difference between the "Speed" and "Structural" settings are..
Hi,
it is explained in the latest firmware release:
https://github.com/prusa3d/Prusa-Firmware-Buddy/releases/tag/v5.0.0-RC1
Sorry for the question. But can you use the profiles that are not Input Shaper, even if the IS firmware is installed on the printer? Does it make any sense to do this?
Hi,
non IS profiles can be used on an Input Shaper firmware. However, it is better to use the appropriate profiles for the best performance.
/ Knowledge Base
The guy behind Prusa assembly manuals...
RE: Difference between profiles
You can install the non-IS profile as a second printer, that's what I am doing. Works great, but is rarely needed.
RE: Difference between profiles
Functional or structural parts must be printed slowly enough that the layers have time to weld together well. Even then it pays to consider the direction of print head travel as prints tend to be stronger across the lay and weaker between the layers.
But structural is now slower than the default mk4 profiles, almost like mk3?, atlast for some simple prints I have compared with.
But need to test speed to see if it is strong enough, mostly simple boxes etc (gridfinity)
That's right. For strong interlayer adhesion slow the printer and raise the temperature - on any FDM printer. It's a function of the underlying physics, not of the machine.
I can't imagine ever using the speed settings. On my Mk3 most of my own print profiles reduce the print speed in some way; I label them 'Engineering' profiles rather than structural but the principle is the same. When my XL arrives I expect to do the same.
If you want to produce qood quality FDM prints quickly buy more printers but slow them down.
Cheerio,
RE: Difference between profiles
But structural is now slower than the default mk4 profiles, almost like mk3?, atlast for some simple prints I have compared with.
But need to test speed to see if it is strong enough, mostly simple boxes etc (gridfinity)
It is not the case. Both speeds and accelerations are higher with 0.2 STRUCTURAL vs old 0.20 SPEED.
RE: Difference between profiles
I am a bit confused by the patch note description. Is basicly the old SPEED profile obsolete?
If i understand right the the IS STRUCTURAL is faster and deliver better qualiy then the old speed. (Of course with quality filament which can used with the speed and acceleration of the IS profiles) Am I right?