Unable to disable Brim in latest updated 2.4.0 edition
my prusa slicer just got updated.
now strangely all objects are having a "Brim" when I slice them.
i have disabled Brim everywhere in the settings but still the brims happens to be there when sliced.
why would this be happening?
Version Information: PrusaSlicerVersion: 2.4.0+win64Build: PrusaSlicer-2.4.0+win64-202112211614
RE: Unable to disable Brim in latest updated 2.4.0 edition
@sid-2
Post a Zipped up .3mf projrct file exported from PrusaSlicer 2.4.0 final and I'll take a looks.
Note: the file must be zipped or the forum wont allow it to be posted.
Regards
Swiss_Cheese
The Filament Whisperer
RE: Unable to disable Brim in latest updated 2.4.0 edition
attaching the zipped 3mf file as asked.
thanking you very much for your time! 🙂
RE: Unable to disable Brim in latest updated 2.4.0 edition
That's not a brim, it's support. I think it's created because of the rounding where the objects touch the bed.
If it's possible replace the rounding with a chamfer. (what is the correct name for an outside fillet? is it a round?)
If not and you really don't want the support set "Enforce support for the first" to zero.
RE: Unable to disable Brim in latest updated 2.4.0 edition
Yeah its the Support base layer, its that big as its set to the default 3mm (Support Material>First Layer Expansion. While you have support set to none you also have enforce support for the first 5 layers configured which is causing there to be no support for those overhanging edges which certainly DO need support while still leaving the support algorithm generating the base which is not used.
There are quite a lot of suboptimal settings in your project around supports. A contact z distance of 0.5 ? thats not really going to support much of anything. While 0.1 is too close and makes support removal hard, a setting of 0.2 - 0.25 is easily sufficient, especially for PLA which seems to be the material type. Also you are using 2.4, that has the new snug supports option. Something you should definitely make use of.
Btw towlerg, a chamfer is rounded, either exterior or interior on an edge, a fillet is the angled version.
Chamfers (such as these caps use) are almost impossible to print nicely when oriented as these are with fdm. Its why designs for 3d printing use a fillet or a hybrid (fillet up to 45 degrees and then chamfer above that) to make printing without support possible. The problem when they are on the bed is there isnt enough room to get support under the lower layers so they sag and you end up post processing them anyway.
Have a look at the attached project, many minor changes but hopefully you can see what the changed settings result in.
RE: Unable to disable Brim in latest updated 2.4.0 edition
Btw towlerg, a chamfer is rounded, either exterior or interior on an edge, a fillet is the angled version.
I think you might have that backwards
https://mechanicalsphere.blogspot.com/2018/08/fillet-and-chamfer-why-and-when-to-use_3.html
RE: Unable to disable Brim in latest updated 2.4.0 edition
Quite possibly, was going from memory, which is getting older 😂