1 Topic by pirvan (edited by pirvan 2013-08-06 04:46:19)

  • pirvan
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Topic: Octave Filament - Burning ?!

I just switched to a new roll of filament in mid print, as my old roll was running out.  The original roll was white ABS (I don't remember the brand,  and the new roll was also white filament but Octave brand.

The switch went on without any glitches, the printer continued where it left off, went on for a few paths, then started to lay down some brown filament.  I then noticed I could see smoke from the tip of the extruder, something I hadn't seen before.  The filament it was putting down was actually burnt.

I lowered the temperature, and the brown started going away, but by now the print was ruined.

I had previously used pink colored Octave filament and didn't have this problem.  Does anyone else  use Octave filament and have you come across similar problems, what extruder temps are you using with it?

BTW, my original default temps were 200°C (205° first layer).  To get this to stop burning the filament,  I had to lower it by 10°, to 190°C.

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To print or, 3D print, that is the question...
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2 Reply by adrian

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Re: Octave Filament - Burning ?!

Lighter filaments often need lower temps, and the feedstock for the filament differing temps.

190 solidoodle degrees is 220-225 normal degrees, which is not an unusual print temp to use...

Chromatic filament often drops to 210, or 180....

3 Reply by pirvan

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Re: Octave Filament - Burning ?!

adrian wrote:

Lighter filaments often need lower temps, and the feedstock for the filament differing temps.

190 solidoodle degrees is 220-225 normal degrees, which is not an unusual print temp to use...

Chromatic filament often drops to 210, or 180....

190 solidoodle degrees is 220-225 normal degrees
Is this discrepancy you mention something that has been verified?  This is the first time I hear of it. 

It also doesn't explain why this is the first time this has happened.  I've used other filaments before from other manufacturers and never had it burning like this.

To print or, 3D print, that is the question...
SD3 printer w/too many mods,  Printrbot Simple Maker Ed.,  FormLabs Form 1+
AnyCubic Photon, Shining 3D EinScan-S & Atlas 3D scanners...
...and too much time on my hands.

4 Reply by adrian (edited by adrian 2013-08-06 22:44:52)

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Re: Octave Filament - Burning ?!

pirvan wrote:
adrian wrote:

Lighter filaments often need lower temps, and the feedstock for the filament differing temps.

190 solidoodle degrees is 220-225 normal degrees, which is not an unusual print temp to use...

Chromatic filament often drops to 210, or 180....

190 solidoodle degrees is 220-225 normal degrees
Is this discrepancy you mention something that has been verified?  This is the first time I hear of it.

Its been discussed numerous times - its quite well established. Its because on the solidoodle nozzle the thermistor is a fair distance from the meltzone, on the outside of the nozzle. On every other extruder, it is inside the heater block. Its quite common knowledge and not a secret by any means...

pirvan wrote:

It also doesn't explain why this is the first time this has happened.  I've used other filaments before from other manufacturers and never had it burning like this.

It does actually explain it - read what I wrote about how different filament from different manufacturers uses different melt point plastic feedstock..... "Other filaments from other manufacturers" is precisely the difference! smile All plastics are NOT identical.. and different manufacturers and filaments will have different tempreature requirements and even flow rates....

5 Reply by Randavian

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Re: Octave Filament - Burning ?!

I have used a whole roll of Octave white filament without that issue.  I run my extruder at 200 for the first layer and 195 thereafter.  I am about to start another roll of the same stuff that I recently ordered.  Perhaps you got a bad batch?

6 Reply by RavensCrest

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Re: Octave Filament - Burning ?!

I got these burn mark when octave's plastic wrapper is fused to the filament... (and i am too ignorent to toss it away, and insist on using it) so check your filament for obvious plastic wrap

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