PP Sheetpress

Author avatarPPatASU | Last edit 2/03/2022 by PPatASU

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The following guide documents the build of the Precious Plastic Sheet Press as supplied and designed by Citizen Scientific Workshop.
5 day(s)
Recycling & Upcycling
7000 EUR (€)



Step 1 - Top and Bottom Plates (grid structure)

*The following X steps will be used to make 2 identical plate assemblies. The parts listed are for 1 assembly (so double everything if you're making two plates at a time)


1/4"-20 tap + tap handle

countersink (or anything over 1/4" bit) for hole cleanup

1/2" Socket


1 meter aluminum sheet

2x 1000mm 2040 extrusion

4x 960mm 2040 extrusion

4x 286mm 2040 extrusion

2x266mm 2040 extrusion

156 T-nuts (16*9) + 12)

156 M8x16mm Bolts


  1. Tap the 36 pre-drilled 13/64" holes with the 1/4"-20 tap.
    1. use the countersink bit to clean up any debris.
  2. Layout the large extrusion (image 2) so that the 1m sides are parallel, and the 960mm beams are evenly distributed at 90 degrees to the 1m beams.
  3. Insert 12 t-nuts (6 in each row) into each extrusion face that faces the inside of the plate. (image 2). 8 faces total(4 from exterior beams, and 4 from each side of the two interior beams. 96 nuts total
  4. Position the two 266mm beams in the center row, splitting it into 3 equal sections.
  5. Position the four 286mm beams in the top and bottom rows, matching the position of the 266 beams.
  6. For each 40mm face of these interior beams, place 4 t nuts (2 in each slot). Be sure to place these on both faces. 48 nuts total.

Attaching the exterior beams to the plate

  1. On the bottom 20mm face, slide 4 t nuts into each 1000mm beam. (image 4)
  2. Match these T nuts with the holes in the plate as this will be a "blind" install. (image 5)
  3. slide the plate off your work area so you can access the holes from below.
  4. Place the extrusion directly on top of the plate ensuring not to shift it off its alignment.
  5. Using the M8 bolts, secure the beam to the plate.
  6. Repeat this process until you have attached both 1000mm beams and 960mm beams. (12 bolts total)