Re: Filament Extruder - Convert pellets to filament
elmoret wrote:
~4"/min.
What is the rpm at this extrusion ?
1,376 2013-04-15 19:06:56
1,377 2013-04-15 19:19:37
Re: Filament Extruder - Convert pellets to filament
elmoret wrote:
knarf2011 wrote:Some parts are thick enough, but it's inconsistent. I suppose i should try a lower temp, as the thicker parts seem to represent the times when the temp was lower (I don't know why, it just lowered at seemingly random moments and then went back up).
190 is too hot, and if the temperature is swinging, you need to auto-tune the PID.
I extrude at 194 just fine.
+1 on the auto-tune of the PID
SD2 with E3D, SD Press, Form 1+
Filastruder
NYLON (taulman): http://www.soliforum.com/topic/466/nylon/
Filastruder
NYLON (taulman): http://www.soliforum.com/topic/466/nylon/
1,378 2013-04-15 19:20:53
Re: Filament Extruder - Convert pellets to filament
serkanc wrote:
elmoret wrote:~4"/min.
What is the rpm at this extrusion ?
~1.5.
1,379 2013-04-15 19:30:43
Re: Filament Extruder - Convert pellets to filament
DePartedPrinter wrote:
elmoret wrote:knarf2011 wrote:Some parts are thick enough, but it's inconsistent. I suppose i should try a lower temp, as the thicker parts seem to represent the times when the temp was lower (I don't know why, it just lowered at seemingly random moments and then went back up).
190 is too hot, and if the temperature is swinging, you need to auto-tune the PID.
I extrude at 194 just fine.
+1 on the auto-tune of the PID
While extruding above 190 I cannot get flat surface ( surface with lots of grooves ). What is the rpm of extrusion?
1,380 2013-04-15 19:33:53
Re: Filament Extruder - Convert pellets to filament
elmoret wrote:
serkanc wrote:elmoret wrote:~4"/min.
What is the rpm at this extrusion ?
~1.5.
At 1.2 rpm I cannot extrude more then 1 inch per minute at 180C. If i increase the temp, I couldn't get flat surface. I think I have feeding problem. My hopper length is 20mm.
1,381 2013-04-18 17:03:02
Re: Filament Extruder - Convert pellets to filament
Hi guys,
I was just wondering if polypropylene (PP) granules could be used. My local warehouse sells it by 0.7$/kg, and this is really interesting point.
1,382 2013-04-18 17:37:01
Re: Filament Extruder - Convert pellets to filament
To my knowledge, no one's tried yet.
1,383 2013-04-18 18:26:55
Re: Filament Extruder - Convert pellets to filament
heliorunner wrote:
Hi guys,
I was just wondering if polypropylene (PP) granules could be used. My local warehouse sells it by 0.7$/kg, and this is really interesting point.
Keep in mind the melting point of PP.
SD2 with E3D, SD Press, Form 1+
Filastruder
NYLON (taulman): http://www.soliforum.com/topic/466/nylon/
Filastruder
NYLON (taulman): http://www.soliforum.com/topic/466/nylon/
1,384 2013-04-18 18:31:04
Re: Filament Extruder - Convert pellets to filament
DePartedPrinter wrote:
heliorunner wrote:Hi guys,
I was just wondering if polypropylene (PP) granules could be used. My local warehouse sells it by 0.7$/kg, and this is really interesting point.Keep in mind the melting point of PP.
130-170C ?
1,385 2013-04-18 18:33:18
Re: Filament Extruder - Convert pellets to filament
There is a post on the RepRap blog from 2009 on PP. It takes more care due to warping worse than ABS. I think the conclusion was run it a bit hotter, very slow with some cooling and with an enclosure.
1,386 2013-04-19 16:36:53
Re: Filament Extruder - Convert pellets to filament
DePartedPrinter wrote:
elmoret wrote:cmetzel wrote:$58K???
the highest guess from a beta tester before this was from Departed - $50k. He wins the prize!
dont forget about my long term goal of 200k.
one sale away...
SD2 with E3D, SD Press, Form 1+
Filastruder
NYLON (taulman): http://www.soliforum.com/topic/466/nylon/
Filastruder
NYLON (taulman): http://www.soliforum.com/topic/466/nylon/
1,387 2013-04-21 20:07:14
Re: Filament Extruder - Convert pellets to filament
I installed the speed controller and I extruded at 1.5 rpm and 200 Celsius degrees but got pretty consistent 1.7 - 1.69 mm and not 1.75. The hole is 1.75 mm and also I changed the cap on which the die is 12 mm long. Any ideas what I should do to get 1.75 mm? Also, how do you manage the coiling? I have problems with it on the floor as sometimes is not going well and then the filament gets bend when is getting out from the die hole.
1,388 2013-04-21 20:34:25
Re: Filament Extruder - Convert pellets to filament
Gave it a go at extruding the Shapeways nylon today.
It has black specks because I hadn't purged the extruder - that's metal from where I dremeled the nipple.
The powder is very fine, maybe finer than flour. It seems to extrude a lot like ABS.
Have to say I'm excited about it...
1,389 2013-04-21 20:54:20
Re: Filament Extruder - Convert pellets to filament
I wonder what the cost for material would be. I'm sure the powder is a lot more expensive than pellets, though there is the issue of finding pellets.
1,390 2013-04-21 22:20:01
Re: Filament Extruder - Convert pellets to filament
Maybe I am not looking hard enough, but is there a release date for this? Also, how much will it cost? Thanks!
SD2 w/ Heated bed. Mods: E3D MK5, Lawsy MKV, Glass Bed, printed filament stand
1,391 2013-04-22 00:22:05
Re: Filament Extruder - Convert pellets to filament
This nylon experiment gives me hope for my pva granules that should be about the same size or maybe a bit bigger. Early bird becoming eager beaver...
1,392 2013-04-22 04:14:37
Re: Filament Extruder - Convert pellets to filament
IanJohnson wrote:
I wonder what the cost for material would be. I'm sure the powder is a lot more expensive than pellets, though there is the issue of finding pellets.
I've asked Shapeways how much it is. I only got to run it for a half hour or so, but it seemed fine. Extruded at about 9"/min.
1,393 2013-04-22 07:59:10 (edited by blazespinnaker 2013-04-22 08:00:48)
Re: Filament Extruder - Convert pellets to filament
Nylon is super cheap according to this: htp://forums.reprap.org/read.php?1,70471,78587
How's the bubble situation? Did you heat it up in an oven? Did you try printing in the Solidoodle?
BTW, Do you have a USB Microscope? (You can get one off eBay .. they're really cheap and pretty effective.)
Do you know exactly what type of Nylon it is? eg:
their are several different types of Polyamide (PA6, PA6.6, PA11 &PA12) and they all have different melt temps from 180 to 240. also most are unplasticized.
KDI can offer a low melt temp Plasticized PA12 filament in natural or black, we would need to get a fair bit of interest before committing to a run as the raw materials are 4 times the cost of PLA plus a few other things too.
1,394 2013-04-22 14:58:49
Re: Filament Extruder - Convert pellets to filament
Proteus wrote:
Maybe I am not looking hard enough, but is there a release date for this? Also, how much will it cost? Thanks!
You mean post-kickstarter?
1,395 2013-04-22 16:00:39 (edited by blazespinnaker 2013-04-22 16:00:54)
Re: Filament Extruder - Convert pellets to filament
Gee, thx for the answers! I'll keep that in mind next time I recommend your filastruder to someone.
1,396 2013-04-22 16:33:23
Re: Filament Extruder - Convert pellets to filament
blazespinnaker wrote:
Gee, thx for the answers! I'll keep that in mind next time I recommend your filastruder to someone.
Wow. He posted before you, and I was waiting to hear back from Shapeways so I could better answer your question. Thanks for the sarcastic reply, though.
I did not predry, and I see no bubbles but since its opaque, it's possible there's microbubbles.
I don't see how a microscope would help, unless it has an x-ray feature.
I've not tried printing it yet. No time yet.
Here's the MSDS, it's all I have from Shapeways so far:
http://www.shapeways.com/rrstatic/mater … ngflex.pdf
Hope that helps.
1,397 2013-04-22 18:23:16
Re: Filament Extruder - Convert pellets to filament
The powder seems to be about $70/kg. It would be cool to work with pellets, but Nylon encompasses such a wide range of materials, I'm not sure what to look for. Someone posted on Thingiverse about printing with 3mm urethane belts meant for pulleys. That could be another option to explore for flexible materials.
With Nylon there is the possiblilty of using dye to color it. I wonder how well using dye on pellets before extrusion would work.
1,398 2013-04-22 22:13:19
Re: Filament Extruder - Convert pellets to filament
IanJohnson wrote:
The powder seems to be about $70/kg. It would be cool to work with pellets, but Nylon encompasses such a wide range of materials, I'm not sure what to look for. Someone posted on Thingiverse about printing with 3mm urethane belts meant for pulleys. That could be another option to explore for flexible materials.
With Nylon there is the possiblilty of using dye to color it. I wonder how well using dye on pellets before extrusion would work.
$70/kg...Ill stick with Taulman for now
SD2 with E3D, SD Press, Form 1+
Filastruder
NYLON (taulman): http://www.soliforum.com/topic/466/nylon/
Filastruder
NYLON (taulman): http://www.soliforum.com/topic/466/nylon/
1,399 2013-04-23 02:52:09
Re: Filament Extruder - Convert pellets to filament
Ran more Nylon today. Seems to be +/-0.08mm, though it didn't have a clear path to the floor where I had it set up. It seems to behave a lot like ABS. Pretty neat.
1,400 2013-04-23 03:04:30
Re: Filament Extruder - Convert pellets to filament
I wonder how it prints compared to the Taulman 618 since you might want different properties for sintering powder vs. extruding filament. Also $70/kg includes extra processing to make a fine powder, and probably a ridiculous markup as well.