[Lab] Maker Bot Extrusion Issue

[Andrew Plumb]

Hey Ryan,

When you start a print, it usually moves the nozzle up to Z=+10mm and extrudes a noodle to get the plastic flowing, then sends the nozzle back to Z=0.

When running from the SD card, it doesn't pause between the noodle and returning back to Z=0 to start the build.  You have to be ready with tweezers or pliers to pull the noodle out of the way.

220C should be the right temperature.

Andrew.

On 2011-11-19, at 5:39 PM, Ryan Stec wrote:

> I'm pretty sure the violin print that is on the card is a solid one we have used before and it was producing the same problem.
> 
> Andrew had helped me load ReplicatorG onto my laptop (lenovo thinkpad x220, windows 7) and we had generated some code from my file. I tried to take another crack at the creation of the gcode as well and seem to produce the same result.
> 
> I am building the code onto the SD card for printing from the card.
> 
> 
> On Sat, Nov 19, 2011 at 5:16 PM, Paul & Andrea Mumby <themumbys at gmail.com> wrote:
> Yeah that's a good idea. Have a saved "known good" small object already done up in gcode, and saved on an SD card somewhere near the machine, so you can run that as a quick test (like a 5 min print or something).
> 
> - Paul
> 
> 
> On Sat, Nov 19, 2011 at 5:14 PM, Darcy Whyte <darcy at siteware.com> wrote:
> 
> Is there known working g-code for a small object lying around? That can help determine if it's the physical machine or further back in the tool chain?
> 
> Perhaps we should have something small like a button or something for validating machine operation?
> 
> 
> 
> 
> 
> 
> 
> 
> On Sat, Nov 19, 2011 at 4:08 PM, Ryan Stec <ryanstec at artengine.ca> wrote:
> Hey Folks,
> 
> Am here in the Artengine lab working on the Cupcake CNC but am having trouble with my printing process. I seem to get too much plastic coming out at the start and have to stop as it starts building a little puddle of plastic.
> 
> It seems like the nozzle is moving too slow or the extrusion too fast.
> 
> I am running the build from the SD Card. 
> 
> Looking through the MakerBot Site I can find lots of info about not getting enough filament, but nothing about too much.
> 
> Do I have to figure out what the right feed rate is? Is the 220 degree C temp too hot?
> 
> 
> -- 
> _______________________________
> 
> Ryan Stec
> Artistic Director
> Artengine
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> 
> -- 
> _______________________________
> 
> Ryan Stec
> Artistic Director
> Artengine
> 2 Daly Ave.	       Ottawa, ON
> K1N 6E2	 	       613.686.1941
> Try your luck with Adrian Göllner at http://artengine.ca/shapeofluck
> 
> Read the Driving Creativity Blog at artengine.ca/blog
> 
> Follow us on Twitter @artengine
> 
> 
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> Lab mailing list
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