Adding its own supports?

[thehitman04 0]

Hi, just printing something now that when i had it in meshmixer and in cura it has no supports at all

http://www.thingiverse.com/thing:29114/#files

This is the file in question, now when it prints its printing with its own support system. Now im not complaining i think its great but what is adding the support?

Alot of things i do id like this same support network for but i dont know how to add it, i know i can add them in meshmixer but i much prefer this support structure as its alot more robust

 

[IRobertI 521]

You must've enabled support in cura since it isn't in the model itself.

 

[thehitman04 0]

how come it doesnt print on every model?

 

[IRobertI 521]

Maybe it wasn't needed on those models.

 

[thehitman04 0]

thats what i thought, but on one of the ones ive done it definately would have been as it was a 90 degree overhang, the only 2 models its done it on is this one, and a duplo brick type of thing. the brick was the first and i assumed it was the program the guy had used to make the file that did it, it didnt have the supports in cura either. That one was a 90 degree overhang too.

Got me baffled

 

[IRobertI 521]

It depends on where the overhang is and which type of support you're using "Touching buildplate" or "Everywhere". With the first it will only generate support if the support can be built from the buildplate all the way up to the overhang. With the second option it will generate support that can be built either from the buildplate and up or from the actual object itself and up.

Load up a model in cura, switch to layer view and play around with those two settings and you'll see the difference.

 

[thehitman04 0]

Ive got it on touching buildplate since i started it. That makes sense but 2 of the models were almost identical in the way the overhang is, one did and one didnt. Ill have a look at that setting though and see if i can find out why its not doing it all the time.

Thanks

 

[braddock 1]

As Robert said, check it in layer view, you'll see if cura is generating supports or not.

 

[thehitman04 0]

It is for this, but still not for another

 

[gr5 2,266]

Post a picture of layer view for this "other" part that has no support. Usually it's obvious why no support.

 

[DidierKlein 729]

I printed this skull and those supports are well needed. Sometimes you would think that Cura would place supports on some parts but it doesn't and usually this works well. If it doesn't support it's probably because Cura is smart enough to know it will print fine.

This skull will print okay without support but the cheek bones will be messy as there are some big overhangs and the right side has a part that is printed in the air so you would have a hole there.

 

[thehitman04 0]

Ill get a picture on as soon as i get out of bed lol, yeh i agree the supports are great. I just wish i could turn them on constantly

[DidierKlein 729]

I think you can change the angles where support is needed in the expert settings if this is what you want? I believe the default is add support for 60° angles