PVA Supports in Cura

[thanks1976 0]

Hi All,
Trying to print with PVA (In extruder 2) and was wondering why Extruder 2 is creating more supports than Extruder 1? Setting are exactly the same.

Thanks in advance

 

[nallath 1,117]

Is the support horizontal expansion different?

[thanks1976 0]

Yes, the PVA support with extruder 2 seem to engulf the part, in both photos the part is in the same orientation only thing i have changed is selecting which extruder will generate the supports

 

[gr5 2,067]

@thanks1976 - I think you misunderstood Nallath.  There is a parameter called support horizontal expansion.  I think you will find that has a value of about 3mm when you support with a second extruder.

 

There is a good reason for this.  If you have PVA support, PVA doesn't print on top of PLA very well.  But if you do some horizontal expansion, then you can print PVA all the way down to the print bed and you are more likely to get a successful print.

 

You can change this parameter yourself if you think you are smarter than Cura.

 

[thanks1976 0]

Thank you for the reply, I will try both and see.

Thanks