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Support Blocker Has No Effect

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Posted · Support Blocker Has No Effect

I have a model with several supports that I would like to remove. To do so I added a support blocker cube.

But after slicing, the supports are still there. The blocker seems to have no effect at all.

 

Am I using the blocker wrong?

 

PS: I tried with Cura 3.6 and 4.0 on Windows and Mac.

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Posted · Support Blocker Has No Effect

There is a bug in the support blocker function and I assume it is exactly your issue. When you block any support at the bottom, but there is another support over the blocked support below, then the blocker is ignored. 

 

So far as I know, there is currently also no workaround for it. You can try to play with the support horizontal expansion setting, but I think it will not help.

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Posted · Support Blocker Has No Effect

Insert a box in the jaws of the model. Then use 'per model' settings to tell it to print as support. Make sure you turn off the support for the main model though or it will put support where it always does.

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Posted · Support Blocker Has No Effect
11 hours ago, kmanstudios said:

Insert a box in the jaws of the model. Then use 'per model' settings to tell it to print as support. Make sure you turn off the support for the main model though or it will put support where it always does.

 

Hey, thanks for pointing out this workaround. But I also have some models which are a lot more complicated, so positioning all supports manually would be quite a pain in the a** 😉

 

12 hours ago, Smithy said:

There is a bug in the support blocker function and I assume it is exactly your issue. When you block any support at the bottom, but there is another support over the blocked support below, then the blocker is ignored.  

 

Sounds like it. This bug seems to be around for quite some time (occurs at least in Cura 3.6, maybe even earlier?). And it appears not to have been fixed in 4.0 either.

Is there any official word if/when this is going to be fixed?

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Posted · Support Blocker Has No Effect

Note that support blocker blocks are not simply subtracted from the support. The idea is that where they overlap a model, that part of the model does not get support.

 

The issue here is that the support from higher up in the model extends all the way down to the buildplate, instead of stopping at the lower part of the model. This is a bug (which last I heard was "mostly fixed" in Cura 4.0).

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Posted · Support Blocker Has No Effect
5 hours ago, ahoeben said:

Note that support blocker blocks are not simply subtracted from the support. The idea is that where they overlap a model, that part of the model does not get support.

 

The issue here is that the support from higher up in the model extends all the way down to the buildplate, instead of stopping at the lower part of the model. This is a bug (which last I heard was "mostly fixed" in Cura 4.0).

 

Sadly the bug is still there in 4.0 😞

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Posted · Support Blocker Has No Effect

Yes, and the bug has been inside longer, I'm not sure, but I think it was before 3.6. too.

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Posted · Support Blocker Has No Effect

Sorry for this question, but where did you found the "support blocker" option in the new 4.0.0 version ?

Tks 

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