Good Muuuhning 😉
Sorry to say but that don't work.
BPadhesion is set to skirt and Support-Brim active; there is nothing... I also can't change the (not existing) Brim size. What I only can do is to swap between calculated and not calculated (1.2 and 1). I'm not able to set a value by hand...
And now you...
The brim for trees (at least in the latest versions) is internal.
Enable Support Brim off:
(That grid is only the first layer)
Enable Support Brim on:
As for the brim size:
If you've entered a line count manually, the width (mm) box will grey out. Just click the 
button and it will restore it to being a calculated number of lines based on the support brim width and brim line width, so you can edit the width in mm.
Ok... Thank you! I had always overlooked the fact that I had to put it back first...
But the brim is always only inside. That doesn't help with very small support structures. It would be much better if the brim was also outside, at best as an option... It's bad the way it is
15 minutes ago, CBX_Micha said:It would be much better if the brim was also outside, at best as an option... It's bad the way it is
Feature request form is here. Although being on the inside instead of the outside doesn't matter as much as you might think - it's more about surface area (and while lines on the inside might cover less area, that can be accounted for by increasing the number of lines, although I think the default is enough).
Although for all I know maybe it is better on the inside. Someone with spatial reasoning skills (i.e. not me) might be able to explain it.
... I'm going to put out a request ...
Because you're wrong!
The print bed certainly has something to do with it, but there is a huge difference if, for example, I have a 4mm tree that rests on the entire inside, or the same tree that only has a 2mm brim on the outside. The outer surface that the brim covers is over three times larger and therefore adheres much better, especially against shear forces.
1 hour ago, CBX_Micha said:... I'm going to put out a request ...
Because you're wrong!
The print bed certainly has something to do with it, but there is a huge difference if, for example, I have a 4mm tree that rests on the entire inside, or the same tree that only has a 2mm brim on the outside. The outer surface that the brim covers is over three times larger and therefore adheres much better, especially against shear forces.
I dispute your challenge. Our arguments concur. I literally said it was "about surface area". You're saying it's about the "surface that the brim covers".
Also while it's not exactly the same sort of thing, when it comes to shear forces, my weird brain (which people who understand physics better than me are encouraged to correct, I love to learn, even at my own expense) just imagined that in a hurricane (wind: great shear force; hurricane: unheard of in this country; cyclone: unheard of in this part of this country) a brim on the outside is like trying to stop your car from blowing away by putting three layers of sandbags stacked around the perimeter of your car, brim on the inside is putting one layer worth of sandbags inside the car. Not as much weight, but it's acting directly as an anchor.
If your car is taller (like a van for example) even if you put five layers of sandbags around it, the forces higher up are going to have more of an effect at just pushing your van over one side of your sandbag wall (and once freed takes flight) because there's nothing actually stopping the inside area of the van from moving. Putting one layer worth of sandbags in the van means the wind has to push over the combined force of gravity from both the van and the sandbags, instead of just the van.
Edited by Slashee_the_Cow1 minute ago, Slashee_the_Cow said:I dispute your challenge. Our arguments concur. I literally said it was "about surface area". You're saying it's about the "surface that the brim covers".
... we misunderstood each other there ...
I meant, on the one hand, the adhesive capacity of the surface itself, and, on the other hand, the area provided for adhesion to it by the brim...
The rest of the comparison is flawed...
That would make sense if the sandbags positioned on the side were connected to the vehicle in some way, like the brim to the tree.
But just placing the sandbags next to it, without a mechanical connection to the vehicle, makes no sense and actually directs winds close to the ground onto the upper half of the vehicle, thus increasing the shear forces even more.
In principle, it is easier to knock over a tree whose roots are only under the tree itself than a tree whose roots extend flat away from the tree. The same should also apply to the support tree: an external brim significantly increases the resistance to knocking over compared to an area limited to the support circumference...
47 minutes ago, CBX_Micha said:The rest of the comparison is flawed...
I said my brain was weird. Let's stop talking about knocking over theoretical objects. I'd love to get a force gauge and knock over actual objects, but those seem to be too expensive and hard to find for whatever reason.
... don't make it so complicated...
Put a simple mechanical spring scale between the object with a precise height and pull slowly (or let it pull through X or Y). And if there is also a drag indicator attached, you get fairly accurate values that can be converted based on the height and the required pulling force...
MariMakes posted a topic in UltiMaker Cura,
ArunC posted a topic in UltiMaker 3D printers,
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Slashee_the_Cow 410
Set Build Plate Adhesion > Build Plate Adhesion Type to whatever you want that isn't Brim.
Enable Support > Enable Support Brim and set the size as desired.
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