Make: Projects

CEB: Stretching the Frame

Stretch the frame on your Compressed Earth Brick Press.

CEB: Stretching the Frame

Additional Materials Required:

  • Soil Loading Drawer
  • Wide Cylinder Supports
  • 3/4″x2″ Bolts (8)
  • 3/4″ Galvanized Nuts (8)



Step #1: Stretch the frame

CEB: Stretching the FrameCEB: Stretching the FrameCEB: Stretching the FrameCEB: Stretching the Frame
  • Attach the cylinder to a hydraulic pump or power cube and contract the cylinder at least 1".
  • Stand up the frame so the press feet are facing down.
  • Insert the Soil loading drawer on top of the horizontal members so that the press plate is facing the press feet.
  • If the drawer doesn't fit because of the spacers, you welded them too close. Grind off the tacks and tack them a little higher.
  • Position the drawer so that the press plate will be fully contacted by the press feet.
  • Bolt the drawer members on snugly.

Step #2:

CEB: Stretching the Frame
  • Use the pump to expand the cylinder as much as possible. The pump will likely stall out.
  • If the pump stalls, turn it back on and expand it fully once more.
  • Expand at least 3 times.
  • Contract it, so you can weld the spacers in. Then detach from the pump.

Step #3: Observations

CEB: Stretching the Frame
  • Remove the drawer members.
  • Look where the spacers are near the drawer.
  • The spacers should be very close to the drawer (less than 1/32") See quality control video if you wonder why.
  • If they are too far, grind off the welds and re-tack them so they are lightly contacting the drawer. Yet again, make sure they are perfectly square with the verticals.