[dms-discuss] DONATION REQUEST Optics and Jury's still out on Printrbot LC

[Mick Balaban]

Rob, 

I have some abs filament (actually a lot of it) and printer hot ends that I am going to try to drop off today, so maybe replacing the hot end will help.
Regarding filament jamming… this is usually the case when filament picks up moisture from the air. The fix is to bake the filament for a while in the oven (people usually use toaster oven and throw in the whole spool for few hours), or 
to store it in a container with the silica or kitty litter for a while until moisture is removed. 

some info here:
http://3dprintingforbeginners.com/how-to-store-3d-printing-filament/ <http://3dprintingforbeginners.com/how-to-store-3d-printing-filament/>
https://www.youtube.com/watch?v=pLheXqpY7gA <https://www.youtube.com/watch?v=pLheXqpY7gA>
https://blog.adafruit.com/2015/05/28/airtight-filament-storage/ <https://blog.adafruit.com/2015/05/28/airtight-filament-storage/>

Regarding fan not spinning, if you are referring to the the fan on the extruder, that is controlled with the GCode and should not run all the time. Usually slicers would disable it for first few layers (depending on the settings) to allow plastic to stick to the build platform, and then start it after that. If you want to test if fan is working, best way is to run pronterface or similar app that allows you to send gcode to printer, and then type M106 S255 (that last number after S is the speed which goes from 0 to 255)

I hope that helps.

Cheers,
Mick




> On Aug 17, 2015, at 10:39 PM, Robert Nickerson <rob at omsoft.com> wrote:
> 
> Hi 
> 
> 1) I'd like to donate some  lenses that I got from an old school maker, Jack Crowell. They clip on your glasses or goggles and have 2 magnifications. 
> 
> I put them in the drawer with the solder stuff, if anyone doesnt want them, just send me an email and I will take them out. 
> 
> They are small, and make a good addition to our soldering stuff. So there you go. 
> 
> 2) Plus I messed with PrintrbotLC some more. I want  to get it going at Explorit if I can perhaps printing a longer project. I did see evidence of someone printing on it, but  it looked like the job might have prematuerly terminated. After firing it up  it would  not extrude,  until I unbolted the filament feed mechanism and pulled out a bunch of foled up filament, It is now extruding. Then I started a 2 hour job, and It did stop 17 minutes or so through the  2 hour job just, cold. And it was again clogged and not feeding.  The filament had bent and distorted about 3 cm above where the extruder nozzle had melted the filament down to the .4mm at the tip. So I'm wondering  what is intermittenelty jamming it and backing it up and stopping the filament delivery.
> 
> I removed it and further tightened the screws governing tension on the feed mechanism, and it is now extruding smoothly. 
> 
> I dont have time now to run the 2 hour job again, but mabe I will tomorrow and let jeff take it over at 7. 
> 
> I did notice though that the fan is not spinning up at all, though it looks plugged into power. 
> 
> Thoughts? 
> -- 
> Rob Nickerson 
> 
> CEO
> Om Networks
> UCD Class of 96
> C: 530-848-3865
> 
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