Jump to content

A question about the used filament


reble

Recommended Posts

Posted · A question about the used filament

At this time I don't have a lot of left over used filament.  But over time it will build up, what do I do with it? The local recyclers  don't take used 3D printer filament and the Benton County land fill will charge me to dump the used filament.

  • Link to post
    Share on other sites

    Posted (edited) · A question about the used filament

    "100% of all the PLA produced on the planet will end up in landfills." - GregValiant

    "PLA (polylactic acid) is typically made from the sugars in corn starch, cassava or sugarcane. It is biodegradable, carbon-neutral and edible." - Colombia Climate School "The Truth about bio-plastics"

     

    Additional: TreeHugger.com

     

    @reble How much scrap are you planning on producing?  You're supposed to make good parts ya know.

    I use the ends of spools for my little detective work around here.  The ends of spools and/or moist filament is useful as a learning aid and for experimenting with settings.  The scrap rate for that is 100%.

     

    I'm a graduate of the Detroit public school system so this may be a little shaky (I gotta dust off my slipstick for this).

    A 1kg spool of 1.75 is about 330meters or 330,000mm.

    At .2 layer height and .4 line width - 1mm of 1.75 filament will provide 30.06mm of extrusion.

    330,000 * 30.06 = 9,919,800mm of extrusion/spool.

    At 50mm/sec that's 55.11hrs of print time / spool.

    At a scrap rate of 50% (I've been higher) that's about 1/2 kilo of scrap every 2.3 days.

    If you print 24/7 for a year that would come out to around 159 (1)kg spools of filament of which 79kg (175#) would be scrap.

    A little salt...maybe some ketchup...you eat a 1/2lb of PLA per day, everything goes down the toilet, and the problem is resolved.

     

    A little feedback here, so don't eat it.

     

    Never throw tools away.  For those of you who don't know, this is a sliderule which was known colloquially as a slipstick.  It's amazing how something so small and light could be so cumbersome.

    DSCN2827.thumb.JPG.71fdad8fd35956088069ed20f3015943.JPG

     

    Edited by GregValiant
  • Link to post
    Share on other sites

    Posted · A question about the used filament
    4 hours ago, GregValiant said:

    "PLA (polylactic acid) is typically made from the sugars in corn starch, cassava or sugarcane. It is biodegradable, carbon-neutral and edible."

    I don't see how someone can claim that (all) PLA is carbon-neutral. Energy goes into the making of corn/cassava/sugarcane and into the production process of the PLA, and the production of that energy may or may not be carbon-neutral. Also please don't tell people eating PLA filament is "safe". Even if the base PLA product may not kill you, you don't know what additives (colorants etc) are in the filament.

  • Link to post
    Share on other sites

    Posted · A question about the used filament

    1. "biodegradable" and "biodegradable under industrial composting conditions" are two different things.
    2. "edible" and "ingestible and non-toxic" are two different things.

     

    • Like 1
    Link to post
    Share on other sites

    • 2 weeks later...
    Posted · A question about the used filament

    I know PLA is biodegradable but I am sure not going to eat it nor would I feed it to my dog. I was just curious as to what happens to the used left over PLA. At the rate that I am 3D printing I will be in an assisted living home before I fill the 1st box with used left over PLA.  :-)

  • Link to post
    Share on other sites

    Create an account or sign in to comment

    You need to be a member in order to leave a comment

    Create an account

    Sign up for a new account in our community. It's easy!

    Register a new account

    Sign in

    Already have an account? Sign in here.

    Sign In Now
    • Our picks

      • UltiMaker Cura 5.7 stable released
        Cura 5.7 is here and it brings a handy new workflow improvement when using Thingiverse and Cura together, as well as additional capabilities for Method series printers, and a powerful way of sharing print settings using new printer-agnostic project files! Read on to find out about all of these improvements and more. 
         
          • Like
        • 7 replies
      • S-Line Firmware 8.3.0 was released Nov. 20th on the "Latest" firmware branch.
        (Sorry, was out of office when this released)

        This update is for...
        All UltiMaker S series  
        New features
         
        Temperature status. During print preparation, the temperatures of the print cores and build plate will be shown on the display. This gives a better indication of the progress and remaining wait time. Save log files in paused state. It is now possible to save the printer's log files to USB if the currently active print job is paused. Previously, the Dump logs to USB option was only enabled if the printer was in idle state. Confirm print removal via Digital Factory. If the printer is connected to the Digital Factory, it is now possible to confirm the removal of a previous print job via the Digital Factory interface. This is useful in situations where the build plate is clear, but the operator forgot to select Confirm removal on the printer’s display. Visit this page for more information about this feature.
          • Like
        • 0 replies
    ×
    ×
    • Create New...