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:

• housing material was 250 GR mild steel, rather than stainless. This meant that material costs were reduced, although painting was required to prevent corrosion.
• blades were cut from BIS 80, a high strength steel, rather than stainless. This was intended to produce cutting blades that will withstand greater stresses, and maintain an edge for longer.
• shaft was made from 28.257 hex bar (available as stock in Australia), with ends turned to 20mm. This size allowed use of a readily available coupler to attach the motor. A keyway was cut into this shaft, rather than using the grub screw of the original design.
• 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).