can oozing be due to humidity ?

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Hugues
Posts: 270
Joined: Thu Apr 04, 2013 5:36 pm

can oozing be due to humidity ?

Post by Hugues »

Hi guys,

just finished my dua extruder upgrade, it's gonna be challenging :?

I've got lots of oozing, not ideal when the second extruder is hovering the printed part while doing nothing apart of oozing down on the part below,

my filament is probably not that dry, printing in the basement, can a not-dry-enough filament ooze more than when dry ?
Hugues
Regards from Switzerland

seaton
Posts: 291
Joined: Tue May 14, 2013 9:04 am
Location: Bunbury, Western Australia
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Post by seaton »

I'm having the same issue as I just got my second extruder going last week and have been experimenting, I don't think humidity is factor, but definitely filament temperature of the not in use extruder and the way slicer can handle multiple extruders, like wiping before using the extruder. so really it's a juggling act to minimise the oozing.

Kisslicer had a great way of handling the heads where you can set a sitting temperature and the heads would be at that util used then when changed it would revert back again. They also supported a wipe cylinder, I'm now using simplify and they do have a tool change script which I haven't yet explored, but not a wipe cylinder.
Stephen...

Felix 2.0 -> Felix 3.0 dual
Simplify3D Slicer, Kisslicer
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satoer
Posts: 436
Joined: Mon Oct 01, 2012 8:00 pm
Location: Netherlands

Post by satoer »

Look at this video, with some smart tips to prevent oozing
https://www.youtube.com/watch?v=8RXIGjRG-Gc
My Felix 1.5 printed designs on Thingiverse
E3D V6 Hot end upgrade for your Felix
Tweezer bracket for your Felix
Led bar upgrade for your Felix

Hugues
Posts: 270
Joined: Thu Apr 04, 2013 5:36 pm

Post by Hugues »

thanks for the info,
i see small bubbles in the filament that is oozing out, my theory is that it could be water vapor escaping the filament, this also creates pressure that pushes the filament out, and maybe also back towards the peek, creating jamming problems sometimes. I will put my theory to the test and find a way to dry my filament.

Slic3er.org version 1.0.1 has some functionalities to prevent problems with oozing with dual extrusion. It retracts the filament when not in use, also decreases temperature if i'm not mistaken. Then it slowly builds a thin wall around the part to actually wipe the extruder before using it, at each swap.

With some patience, we'll get there.

Thanks for the video Stephen, interesting.
Hugues
Regards from Switzerland

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