What is the problem here?

[GAD 10]

Any time I print with support, be it PVA or PLA, I end up frustrated. The surface over the support is always terrible, and I often get issues like the ones pictured where the round part of the piece is deformed. On larger complex parts I often end up with a spaghetti mess over the support that makes the part unusable. I've tried different print temps, different PVA (Matterhackers PVA pictured because I've grown to absolutely hate Ultimaker PVA), changing support distance, messing with support interface, etc. but it's almost always a problem.

 

Printer is an S5 Pro with firmware 7.1.3.0

 

Pictured PLA is Ultimaker Silver Metallic and PVA is Matterhackers Build PVA that has been sitting in the material station (where it's theoretically the right humidity) for a couple of months. 

 

Cura is 5.2.1

 

Any tips? 

 

[kayakbabe 12]

I have this issue too. no matter if I use PVA or Breakaway. Same version, everything is up to date except the firmware update that came out today. I'm using all Ultimaker materials too. 

Edited February 24, 2023 by kayakbabe

[dsp 20]

I'm not sure what is happening but, if i look at the cylinder as posted it seams the support is taking in the spot for a normal layer, 

With the setting as below I get perfect supported Cylinders (it's worth a shot) and PVA for a couple of moths sounds like old to me, Do you also get this when you use a new roll?

 

[GAD 10]

Thanks for the reply. 

 

I had a similar problem with a different part that I resolved by upping the PVA temp to 190 and using a PVA raft: 

 

 

I find it odd that it only happened on one side. Dunno about that one, but here's the same part with new settings. The only thing I changed was temp and raft: 

 

 

I think what was happening was the PVA layers were not adhering *to each other*. Bed adhesion was fine. A raft just upped the bed adhesion a bit and the slightly higher temp helped the layers to melt together better. 

 

The problem with the squashed cylinder in my first part is the same. If you look at the first pic in this post you can see how the entire left side is raised. Well, this was acting as a spring because you can see it was curling up. Every time the nozzle went over that section it pushed the part down so the PLA layers were getting squashed. Once I finish the other parts I'll reprint the one in the OP, but I bet this will solve the problem.  

[dsp 20]

I use PVA from 123-3D and print with 220°C  so 190 sounds low to me.

Is this Matterhackers PVA always this yellowish? I use neutral and my pva is almost see through.

Also what helped a lot reducing the warp when printing larger prints was using a cardboard box on top of the printer to close it at first, now we have a airmanager which basically does the same, it keeps the temp in the printer higher.