1. If you do a lot of printing with PVA, you might want to take a look at dense supports in S3D. I will link to a video below that explains how to do it. It made a big difference with some of my prints and improved the surface quality above the support structures.
https://www.youtube.com/watch?v=koCVOsRA6Bc
Personally, I've gotten good results using the same settings described in that video (5 dense support layers, 0.1mm horizontal offset, 0 upper and lower separation layers).
2. This isn't something that I personally use, but if you want to have the idle extruder cooldown between every layer when it isn't being used (I think cura does this by default), you can enable that in the Simplify3D tool change script. Just remove the semicolon before the last four M104 lines in the tool change script. If you want the print to completely pause until your set temperature is reached, change the 2nd and 4th M104's to M109's so that the machine waits to heat back up from the idle temperature. The default temperature set for idling is 170ºC, so if that's not what you want to use, you can just edit the M104's to use whatever temperature you want.
Again, I don't use this personally, since I have never noticed a significant quality difference and it makes the prints take a lot longer, but at least it's easy to enable if you want to try it out.
3. Finally, if you're someone that likes to tinker with your acceleration settings, you might also want to use different acceleration values for different materials. For example, you might want to reduce your acceleration and jerk settings for PVA and let the PLA extruder move a bit faster. You can do this pretty easily by putting the following code at the top of the tool change script (assuming your PVA extruder is toolhead 0).
Code: Select all
{IF NEWTOOL=1}M204 S1500
{IF NEWTOOL=1}M205 X15
{IF NEWTOOL=0}M204 S400
{IF NEWTOOL=0}M205 X5
viewtopic.php?f=8&t=1959