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  • FIRST POST
    • ard123en
    • By ard123en 29th Dec 17, 10:53 AM
    • 248Posts
    • 121Thanks
    ard123en
    3d printer
    • #1
    • 29th Dec 17, 10:53 AM
    3d printer 29th Dec 17 at 10:53 AM
    What are people's thoughts about 3d printers

    I'm tending to think it's a good idea can print required stuff for my electronic projects on pla which is a carbon neutral product and as it's corn based will bio degrade in 6 months in composting bin

    Reduced carbon footprint as not ordering single products coming on different deliveries money saving as can get a kg of pla for about £10
Page 1
    • unforeseen
    • By unforeseen 29th Dec 17, 11:08 AM
    • 2,259 Posts
    • 2,849 Thanks
    unforeseen
    • #2
    • 29th Dec 17, 11:08 AM
    • #2
    • 29th Dec 17, 11:08 AM
    It's not as compostable as you think. In a carefully controlled scientific environment then 3-6 months is possible.

    For a normal composting environment it is reckoned to take anything from 100 years up.
    https://www.thoughtco.com/pros-cons-corn-based-plastic-pla-1203953

    Which means it ends up as landfill
    • gardner1
    • By gardner1 29th Dec 17, 11:16 AM
    • 2,293 Posts
    • 3,405 Thanks
    gardner1
    • #3
    • 29th Dec 17, 11:16 AM
    • #3
    • 29th Dec 17, 11:16 AM
    What are people's thoughts about 3d printers

    I'm tending to think it's a good idea can print required stuff for my electronic projects on pla which is a carbon neutral product and as it's corn based will bio degrade in 6 months in composting bin

    Reduced carbon footprint as not ordering single products coming on different deliveries money saving as can get a kg of pla for about £10
    Originally posted by ard123en
    Plus the cost of 3D printer
    • ard123en
    • By ard123en 29th Dec 17, 1:32 PM
    • 248 Posts
    • 121 Thanks
    ard123en
    • #4
    • 29th Dec 17, 1:32 PM
    • #4
    • 29th Dec 17, 1:32 PM
    The cost of the printer is negligible as have money to spend as no one knew what to buy me at Christmas
    • gardner1
    • By gardner1 31st Dec 17, 11:39 AM
    • 2,293 Posts
    • 3,405 Thanks
    gardner1
    • #5
    • 31st Dec 17, 11:39 AM
    • #5
    • 31st Dec 17, 11:39 AM
    The cost of the printer is negligible as have money to spend as no one knew what to buy me at Christmas
    Originally posted by ard123en
    And the cost of this negligible printer is
    • z1a
    • By z1a 31st Dec 17, 1:02 PM
    • 905 Posts
    • 790 Thanks
    z1a
    • #6
    • 31st Dec 17, 1:02 PM
    • #6
    • 31st Dec 17, 1:02 PM
    And the cost of this negligible printer is
    Originally posted by gardner1
    Hope it's into 5 figures, or it's a toy.
    • gardner1
    • By gardner1 31st Dec 17, 2:27 PM
    • 2,293 Posts
    • 3,405 Thanks
    gardner1
    • #7
    • 31st Dec 17, 2:27 PM
    • #7
    • 31st Dec 17, 2:27 PM
    Hope it's into 5 figures, or it's a toy.
    Originally posted by z1a
    This ones 5 figures
    https://www.aldi.co.uk/balco-3d-printer/p/081171187467900
    • Ben84
    • By Ben84 6th Jan 18, 7:24 PM
    • 2,926 Posts
    • 3,587 Thanks
    Ben84
    • #8
    • 6th Jan 18, 7:24 PM
    • #8
    • 6th Jan 18, 7:24 PM
    It's not as compostable as you think. In a carefully controlled scientific environment then 3-6 months is possible.

    For a normal composting environment it is reckoned to take anything from 100 years up.
    https://www.thoughtco.com/pros-cons-corn-based-plastic-pla-1203953

    Which means it ends up as landfill
    Originally posted by unforeseen
    PLA may not be any worse than natural materials in this regard. Items in landfills don't degrade fast - not even paper or food. Decades old newspapers can be dug out of landfills! The tight packing, lack of air and water in landfills actually preserves things quite well. This is well shown by landfill gas, which is sometimes captured and burnt to make electricity. Landfills can keep producing gas for decades after they last had any rubbish put in them, so degradation in this environment is pretty slow going.

    My experiments with composting at home have also found some natural materials to have limited or no degradability. Cotton cloths put in my compost bin came out seemingly unchanged several years later. Natural latex gloves didn't degrade either after several years, came out exactly as they were before. I would have expected these materials to have degraded or at least shown some signs of degrading, but they didn't.

    So, I'm taking these PLA discoveries in context with what I know about the degradability of natural materials - which isn't as good as I had once assumed.

    Well, if someone is going to use a 3D printer to make items they would have bought anyway, it's not leading to extra material use. Making the printer itself will use some though. However, I am very interested in their potential to make items that have been discontinued manufacture - as these can be used to repair things that otherwise would be challenging to repair. Oh, and 3D printers are really cool
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