BVOH not printing...switches to it then switches BACK before printing.

So, I'm trying to print a part using Slic3r (1.37.1) with the Multi Material upgrade on and MK2S. I have my print filament in extruder #1 (PLA) and soluble filament in #2 (BVOH) because extruder #4 isn't working quite right.

The problem is that Slic3r preview shows the support filament in the proper places but when it goes to switch on the wipe pad it switches TWICE. It switches from 1 to 2 and then back to 1 before it starts printing. As a result, the regular PLA is printed instead of the soluble support.

Minor clarification, on 1 of 4 layers (the one with a trivial amount of support material) it actually did print the support. That is the only layer it worked on.

Let me know if you need the files.

(By the way, I would use PRUSA Control but on vertical support it prints it too close to the actual part and they fuse. As far as I can see there is no way to adjust that.)

Answered! View the answer I have this problem too

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Yes, this is the same problem I am having.

Is there a solution yet or is it a bug that we have to wait to be fixed?

To work around this for my current part I printed with supports and reduced the number of interface layers from 3 to 0. The "fins" that were left on the bottom were easy to break off. It leaves the bottom a bit rough, but for this part that was not an issue.

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Hi Mark,

you can try this new alpha build of Slic3r PE, the file is in the comments:

https://github.com/prusa3d/Slic3r/issues...

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I am following the issue on GitHub and posted my reply there. Basically I was asking if I should test that build or wait until other new issues (temperature, etc.) were addressed.

Thanks for being responsive! I'm happy to help test with alpha build once hear back.

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Hi Mark,

great I will close this thread as solved and we can continue on GitHub ;)

You are welcome, we value the feedback.

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Hi Mark,

I've discussed the issue with our engineers. Is your problem similar to the following?

https://github.com/prusa3d/Slic3r/issues...

If so, it is best, if you could add your comment there.

Let me know, thanks ;)

Was this answer helpful?

Score 1

Comments:

Yes, this is the same problem I am having.

Is there a solution yet or is it a bug that we have to wait to be fixed?

To work around this for my current part I printed with supports and reduced the number of interface layers from 3 to 0. The "fins" that were left on the bottom were easy to break off. It leaves the bottom a bit rough, but for this part that was not an issue.

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Mark Stevens will be eternally grateful.
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