Slic3r Soluble interface visualisation & print issue
 
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ScorpioEF
(@scorpioef)
Active Member
Slic3r Soluble interface visualisation & print issue

Hello,

So I'm trying to print a PLA model with PVA soluble interface support.
My settings are :
- 0.2 Normal soluble interface, with everything on default
- Extruder 1 : PLA
- Extruder 4 : PVA
- Slic3r 1.37.1

This is what I see in Slic3r, seems all good :

Then I opened it up in S3D. Unlike in Slic3r, the base is PVA and every layer change the material also changes :

And also the wipe tower doesn't touch the bed. On Slic3r, the first layer of the tower is thicker so that it touches the bed.

I still tried to print it, thinking it's just a visualization bug from S3D, but well S3D was right. The wipe tower didn't even really tried to stick to the bed and the supports were alternating between PLA and PVA.
The priming also make my first extruder motor skip. It seem to try to extrude a huge amount of plastic the first few seconds.

Am I doing something wrong or this is still very buggy ?

Posted : 15/10/2017 3:01 pm
Vojtěch Bubník
(@vojtech-bubnik)
Member Admin
Re: Slic3r Soluble interface visualisation & print issue

Do you have the "soluble" checkbox set for the profile of the soluble filament? This tells Slic3r to use it only where needed. If you have the checkbox off, then Slic3r will primarily try to minimize filament switches. If you have the checkbox on, then Slic3r will try to use as little as possible of it.

Posted : 16/10/2017 3:14 pm
ScorpioEF
(@scorpioef)
Active Member
Topic starter answered:
Re: Slic3r Soluble interface visualisation & print issue

Ah yes sorry, I didn't even thought of looking in the filaments settings. This doesn't seem to be activated by default for BVOH.

After checking this, the visualization is still a little bit off and the first layer is still in soluble material but it's a lot better, thanks a lot.

Posted : 17/10/2017 11:20 am
PJR
 PJR
(@pjr)
Antient Member Moderator
Re: Slic3r Soluble interface visualisation & print issue


the first layer is still in soluble material

Yeah, the first layer is an "interface" so I am not surprised by that. It used to be the same with KISS as well.

Peter

Please note: I do not have any affiliation with Prusa Research. Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage…

Posted : 17/10/2017 11:39 am
ScorpioEF
(@scorpioef)
Active Member
Topic starter answered:
Re: Slic3r Soluble interface visualisation & print issue

Hum... PVA seem to stick a lot less than PLA. I can't make the wipe tower stick well to the bed.

Is there a reason why the wipe tower in soluble support mode doesn't have the same base layer as the others modes?
In soluble support mode, the first layer starts on the second layer (if that make sense) instead of having a good squished first layer.

Posted : 17/10/2017 8:17 pm
Vojtěch Bubník
(@vojtech-bubnik)
Member Admin
Re: Slic3r Soluble interface visualisation & print issue

The preview of filaments over the wipe tower is approximate. The filaments of the support base are assigned first at the time of G-code export. The preview will likely change one day, but not in the near future.

In regard to the first layer being printed with PVA: Would you please create an issue at
https://github.com/prusa3d/slic3r/issues

and provide your config.ini and an AMF file, so I can reproduce your issue? Thanks.

Posted : 21/10/2017 5:25 pm
GoldXD
(@goldxd)
Active Member
Re: Slic3r Soluble interface visualisation & print issue

Is there a reason why the soluble checkbox is NOT checked by default for the soluble filament?

I just burnt some expensive BVOH because of it...figured prusa would check that box by default for their own soluble filament.

Posted : 24/10/2017 2:14 am
Vojtěch Bubník
(@vojtech-bubnik)
Member Admin
Re: Slic3r Soluble interface visualisation & print issue

> Is there a reason why the soluble checkbox is NOT checked by default for the soluble filament?
>
> I just burnt some expensive BVOH because of it...figured prusa would check that box by default for their own soluble filament.

I am sorry if that is the case. I will check with Jindrich, who is responsible for the Slic3r settings.

Posted : 24/10/2017 1:21 pm
Jindřich Beneš
(@jindrich-benes)
Member
Re: Slic3r Soluble interface visualisation & print issue

Parameter Soluble has been turned on for BVOH on github. Thank you for pointing this out.

Posted : 24/10/2017 2:52 pm
ScorpioEF
(@scorpioef)
Active Member
Topic starter answered:
Re: Slic3r Soluble interface visualisation & print issue

As we are on the subject of configuration, I noticed that the settings "Support material/raft/skirt extruder" under Print Settings/Multiple Extruders is by default 0. It's this that makes the first layer to be printed with PVA. Isn't it better to be set at 1 ?

Posted : 26/10/2017 5:10 pm
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