Support Brim requires Brim enabled and other issue

[Adam324 13]

Using 5.3.1

To get support brim to work, I have to also enable Brim under build plate adhesion.  I don't want a brim on the object itself though... only under support.  To get around that I set brim width to 0 but it still wants to put a sigle line around the object itself.  It the picture below, there is an inset that needs support that you can't see but you can see that the top has the same inset.  That is why I need support.  I need support brim to help keep support stuck to the bed without needing to set support to be really dense.  I am using tree supports.

It seems like support brim should not depend on the regular brim for objects.  I recall in a previous version they were not linked in this way.  Trying to disable brim though with width doesn't work as a workaround either though.

WD9_firefly_q6_hat_clip_top.3mf

Edited June 11, 2023 by Adam324

[Torgeir 289]

Hi @Adam324,

 

Just select "Skirt" instead of brim in your profile, then you have the brim under the support and skirt around your model.

 

Thanks

Torgeir

 

 

[GregValiant 1,492]

This has been reported over on GitHub so the Cura team is aware of it.  A bad side effect is that when the Support Brim is missing nothing takes it's place and so the support structure doesn't start until the second layer.  Use @Torgeir's workaround and you should get back to printing.

[Adam324 13]

Thanks guys.  That workaround info is really appreciated. Ill have to test that out.  Skirts are usually hard to remove from my bed so I don't normally use them... I wish there was a layer count for skirt and brim.  I would set them to 2 so that if the first layer is too close to the bed and too thin,  the second layer would make sure it is thick enough to remove more easily.

Edited June 12, 2023 by Adam324

[GregValiant 1,492]

That has been talked about.  @Cuq has written some plugins and he might have one that will increase the skirt height.

I have a putty knife I use to knock it loose.

[Cuq 208]

Not a plugin but a postprocessing script : https://github.com/5axes/Cura-Postprocessing-Scripts#multibrimpy

Edited June 12, 2023 by Cuq

[Adam324 13]

Thanks for all this info guys.  The multi layer brim script is great.  Thanks.  A putty knife doesn't help on soft beds like on the Wanhao D9 if the brim is too thin.  It is a magnetic plate so if the brim is too thin, it is nearly impossible to remove.  I have to print something over top of it to remove it without damaging the magnetic sheet.

[GregValiant 1,492]

In Cura 5.4beta I see the "skirt" can be up to 10 layers high.  For a brim you will need the plugin

[Cuq 208]

13 hours ago, GregValiant said:

In Cura 5.4beta I see the "skirt" can be up to 10 layers high.  For a brim you will need the plugin

Strange I don't see any limit .. after ten the parameters are dispaly in the warning information. But you can go upper.  But main issue there is no "collision check" with the geometry. 

 

[GregValiant 1,492]

Yessir, you are correct.  It was late and something like this had happened.

[Adam324 13]

Looks like this is still a problem in 5.4.0.  Brim set for support still requires brim or skirt for Build Plate Adhesion enabled.   If you still set Skirt or Brim under Build Plate Adhesion to Line Count of 0, it still adds 2 lines of brim or skirt to the object.  I would like to have brim under support only and not around print.

 

Definitely a bug there.

 

Also if you then set Skirt Height to 3 or 4,  A brim gets put around the support that is 3 or 4 high, but the false skirt around the object (skirt line count 0 so it shouldn't exist at all) is only 1 layer high.

Edited July 29, 2023 by Adam324

[LePaul 358]

As I mentioned on another thread, I notice the support prime tower brim isn't as wide as I would expect

I've had a few failure due to the prime tower getting knocked over (Ultimaker Tough PLA and Ultimaker PVA)

Prime Tower Brim in 5.3.1

Edited August 23, 2023 by LePaul

[HELPeRbot3D 0]

On 6/11/2023 at 4:30 PM, Torgeir said:

Hi @Adam324,

 

Just select "Skirt" instead of brim in your profile, then you have the brim under the support and skirt around your model.

 

Thanks

Torgeir

 

 

Thank you so much for this workaround, this was driving me crazy!

[ErikZzz 0]

On 6/11/2023 at 11:30 PM, Torgeir said:

Hi @Adam324,

 

Just select "Skirt" instead of brim in your profile, then you have the brim under the support and skirt around your model.

 

Thanks

Torgeir

 

 

Hi,

On Cura 5.4 here. I too need a skirt around my print but a brim around the tree supports. If I enable skirt as adhesion then "enable support brim" actually does not enable a brim around the support. Is this a bug or "as designed":  



Either way, how do I configure Cura in such a way that I get a brim around the tree supports without having to have a brim around my print?

[LePaul 358]

2 hours ago, ErikZzz said:

Hi,

On Cura 5.4 here. I too need a skirt around my print but a brim around the tree supports. If I enable skirt as adhesion then "enable support brim" actually does not enable a brim around the support. Is this a bug or "as designed":  



Either way, how do I configure Cura in such a way that I get a brim around the tree supports without having to have a brim around my print?

 

Yes, this is what many of us have reported.  Hopefully they fix this soon.  

After numerous failures I've had to go back to 5.3.1 until this is sorted out.

 

[GregValiant 1,492]

If "Brim" is enabled, and the brim distance is enough to keep the brim from adhering to the model that will work and the Support Brim will be correct.

 

This is with "Bed Adhesion" set to "None".  The Support Brim should make all those structures 4mm wider.  When the Support goes down on the next layer without the brim below it, it will often fail due to a lack of adhesion.

 

This is with Bed Adhesion set to Brim and the Brim Distance set to 2.0.  That makes it into a glorified skirt.  It does make the Support Brim form correctly.

Edited October 3, 2023 by GregValiant

[AlteriusOmega 1]

Support Brim isn't working for me at all, even if I select Skirt for normal Build Plate Adhesion, or select Brim and set it to 0. There is only ever a brim around the support if I also set an actual non-zero brim for the part as well. There is no way for me to have a brim around the support but not the part which is very annoying.

Edit, just checked and I was on version 4.12.1. I have it set to check for updates on start so I don't know why it hasn't found that there are new versions. Installing 5.9.1 now to test it.

Edited March 11 by AlteriusOmega

[AlteriusOmega 1]

OK I tested with the newest version of Cura 5.9.1. The support base is wider by default compared to the older version I was using (4.12.1) for some reason but the brim still isn't working right. It seems that the support brim is going inwards rather than outwards. If you look at the difference in these screenshots between when I have Support Brim disabled versus enabled, the actual width of the base of the supports is the same. The only thing it does is add walls on the inside of the support area instead of the grid pattern. The brim should be making the first layer of the support areas wider, not filling in the inside of it.

Edited March 11 by AlteriusOmega

[GregValiant 1,492]

This model doesn't have any cutouts, but the brim is complete.

Support brims always build to the inside.  Here the model brim is set to 15mm and with normal supports.

 

And with trees

 

One more with a skirt.

 

If you post a project file ("File | Save Project" someone will take a look.

A couple of versions ago there was a bug report about this behavior.  I can't recall if it was addressed or not.