Support structure offset

[AndersK 41]

Can anyone point out which setting makes the support being built outside geometry when using PVA?

 

If I set extruder 2 to PLA it looks like second pic.

 

First pic is PLA + PVA (purple)

 

Second is PLA both (Brim is PVA):

 

[ahoeben 966]

The setting is called "Support Horizontal Expansion".

[AndersK 41]

Thx, found it.

 

Any benefit from having that expansion when using PVA?

(Value came from the built in profile for Generic PVA)

 

[ahoeben 966]

I guess it is to prevent creating lots of small "islands" of support on some prints. Since PVA does not stick very well to PLA, these would have a larger chance of tipping over. And it should not do much harm because it will dissolve anyway.

[AndersK 41]

Makes sense, have only done one test print so far with PVA but intend to try it more on some prints that will be a nightmare to clean if using non dissolvable material.