<![CDATA[SoliForum - 3D Printing Community — Gas bubbles inside filament]]> https://www.soliforum.com/topic/7166/gas-bubbles-inside-filament/ Fri, 15 Aug 2014 06:32:00 +0000 PunBB <![CDATA[Re: Gas bubbles inside filament]]> https://www.soliforum.com/post/63369/#p63369 I normally don't have issues with ABS or PLA, but it's pretty dry where I live.  However, living in the Sahara won't even help if you're trying to extrude PVA:
https://dl.dropboxusercontent.com/u/3340824/images/bubbles.jpg
This was one of the "driest" runs.  Great thing is I can just melt it in water and try again later.  BTW - it also makes an excellent extruder purge.  I ran some through then took out my melt filter to clean it, all I had to do was wash it in the sink!

]]> Fri, 15 Aug 2014 06:32:00 +0000 https://www.soliforum.com/post/63369/#p63369 <![CDATA[Re: Gas bubbles inside filament]]> https://www.soliforum.com/post/62432/#p62432 elmoret wrote:

He made it himself, so a manufacturing error is perfectly reasonable. Check what section of the forum you're in

Brain fart, my bad.

]]> Thu, 07 Aug 2014 03:44:18 +0000 https://www.soliforum.com/post/62432/#p62432 <![CDATA[Re: Gas bubbles inside filament]]> https://www.soliforum.com/post/62016/#p62016 I will try these! Thanks once again.

]]> Mon, 04 Aug 2014 14:02:02 +0000 https://www.soliforum.com/post/62016/#p62016 <![CDATA[Re: Gas bubbles inside filament]]> https://www.soliforum.com/post/61909/#p61909 Toaster oven, dehumidifier, or food dehydrator.

]]> Sun, 03 Aug 2014 14:39:19 +0000 https://www.soliforum.com/post/61909/#p61909 <![CDATA[Re: Gas bubbles inside filament]]> https://www.soliforum.com/post/61906/#p61906 Well I have a cheapo toaster oven.  For PLA I set it to the lowest setting which is around 150 F.  PLA softens at 65 - 70 C and this is right around there.
http://www.soliforum.com/misc.php?actio … mp;preview

]]> Sun, 03 Aug 2014 14:11:24 +0000 https://www.soliforum.com/post/61906/#p61906 <![CDATA[Re: Gas bubbles inside filament]]> https://www.soliforum.com/post/61904/#p61904 Thanks to you all! Would you guys please recommend me a way to proper dry the raw material? By the way... this is an HF380 LG material. Downeasta, I checked that this material is specified for injection and not extrusion, though its datasheet seems reasonable for small extruders. What do you say?

]]> Sun, 03 Aug 2014 13:23:33 +0000 https://www.soliforum.com/post/61904/#p61904 <![CDATA[Re: Gas bubbles inside filament]]> https://www.soliforum.com/post/61824/#p61824 He made it himself, so a manufacturing error is perfectly reasonable. Check what section of the forum you're in.

And yes, that picture is definitely from moisture in the raw material.

]]> Sat, 02 Aug 2014 21:40:17 +0000 https://www.soliforum.com/post/61824/#p61824 <![CDATA[Re: Gas bubbles inside filament]]> https://www.soliforum.com/post/61822/#p61822 To me it says you bought some inferior filament.  That picture is not from water, yet more like a manufacturing error.  http://www.soliforum.com/misc.php?action=pun_attachment&amp;item=5869&amp;download=0

Why not tell us where you bought it so we can avoid them as well?

]]> Sat, 02 Aug 2014 21:38:27 +0000 https://www.soliforum.com/post/61822/#p61822 <![CDATA[Re: Gas bubbles inside filament]]> https://www.soliforum.com/post/61783/#p61783 This should not happen, and is indicative that the polymer either needs drying or is being extruded too hot. There is no need for a degassing zone on a Filastruder because it runs slow enough for bubbles to escape up the barrel.

]]> Sat, 02 Aug 2014 15:46:51 +0000 https://www.soliforum.com/post/61783/#p61783 <![CDATA[Re: Gas bubbles inside filament]]> https://www.soliforum.com/post/61780/#p61780 Oof. Can't say what's causing that.
But as far as humidity, PLA is MUCH more sensitive to moisture than ABS.  Both should be dry, but PLA should be really dry.  I have a dedicated room with a dehumidifier running on full blast for this.

]]> Sat, 02 Aug 2014 15:09:35 +0000 https://www.soliforum.com/post/61780/#p61780 <![CDATA[Gas bubbles inside filament]]> https://www.soliforum.com/post/61778/#p61778 Hello guys!
I've been noticing that my filaments started to fill in with bubble gas. Any ideas of what can be causing it?
Going through a few articles around the web I found out that big extruder uses some kind of degassing zone. I also heard that ABS should be as dry as it can be (not as much as PLA but...).

I have attached a picture of it.

Thanks!

]]> Sat, 02 Aug 2014 13:59:56 +0000 https://www.soliforum.com/post/61778/#p61778