Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision
Previous revision
Next revision Both sides next revision
facilities:fablab:equipment-custom:plastic_recycling:plastic_shredder [2019/11/13 11:39]
pmusk
facilities:fablab:equipment-custom:plastic_recycling:plastic_shredder [2020/03/09 17:13]
Michael Byrne
Line 1: Line 1:
 ====== Plastic Shredder ====== ====== Plastic Shredder ======
 +
 +{{ :facilities:fablab:equipment-custom:plastic_recycling:grinder_cropped.jpg?nolink&400 |}}
  
 Shredder components were laser cut by external service providers according to the design files available from the [[https://preciousplastic.com/en/]] website, with the following modifcations: \\ Shredder components were laser cut by external service providers according to the design files available from the [[https://preciousplastic.com/en/]] website, with the following modifcations: \\
Line 8: Line 10:
   * a transparent acrylic hopper was fabricated and mounted above the exposed shredder blades, to provide added safety and increase ease of feed. A short push stick was then used to assist feed entry to the shredder.   * a transparent acrylic hopper was fabricated and mounted above the exposed shredder blades, to provide added safety and increase ease of feed. A short push stick was then used to assist feed entry to the shredder.
   * the sieve screen was modified according to more recent Precious Plastics designs, with extra holes made in the shredder housing to allow the screen to be fixed in place using threaded pins, as a way to make removal and cleaning easier (see: [[https://preciousplastic.com/en/videos/build/upgrades/shredder-2-1.html]]).   * the sieve screen was modified according to more recent Precious Plastics designs, with extra holes made in the shredder housing to allow the screen to be fixed in place using threaded pins, as a way to make removal and cleaning easier (see: [[https://preciousplastic.com/en/videos/build/upgrades/shredder-2-1.html]]).
 +  * DC motor was a [[https://www.motiondynamics.com.au/375w-12-24v-1400rpm-dc-motor.html]]
 +  * Gearbox was a [[https://www.motiondynamics.com.au/worm-drive-gearbox-to-suit-heavy-industrial-motors.html]]
  
 ====Operational Observations==== ====Operational Observations====
Line 31: Line 35:
   * comparison with re-purposing an existing machine would be worth exploring, A garden shredder might do the job,for example, for a much lower cost.   * comparison with re-purposing an existing machine would be worth exploring, A garden shredder might do the job,for example, for a much lower cost.
   * the motor seems underpowered. While this is constrained by using a 24V system, upgrading to 240V, and installing a 2kW motor would overcome many of the jamming and overheating problems.   * the motor seems underpowered. While this is constrained by using a 24V system, upgrading to 240V, and installing a 2kW motor would overcome many of the jamming and overheating problems.
 +
 +
 +====Inductions====
 +Draft induction paperwork has been developed, and is awaiting approval.
 +
 +{{ :facilities:fablab:equipment-custom:plastic_recycling:the_edge_sop_plastic_shredder.docx |}} \\
 +{{ :facilities:fablab:equipment-custom:plastic_recycling:plastic_shredder_induction_final.docx |}}

We acknowledge Aboriginal and Torres Strait Islander peoples and their continuing connection to land and as custodians of stories for millennia. We are inspired by this tradition in our work to share and preserve Queensland's memory for future generations.