For final embedding, pellet cells, remove all plastic. Cut the tops off BEEM capsules, drop the capsules in a plastic conical centrifuge tube, and fill BEEM capsules ~half full with plastic. Suspend pelleted cells and lay over fresh plastic. Centrifuge the cells through the plastic. Remove the plastic and add additional plastic to the pelleted cells. Stirr them up a bit. Then centrifuge again (clinical centrifuge, #7, 30 min) to pellet the cells very well. Put tubes at 40 degrees C overnight and raise to 70-80 degrees C for ~24 hrs.
Polymerize at 40 degrees C overnight and raise to 65-80 degrees for a second day.