the actual boiling time is between three and six hours, although with set up the process takes anywhere from half to a full day. It can only be done during certain weather conditions (dry days) and it requires constant attention. The amount boiled at one time ranges from 60 to 90 kg with 3.5 kg of caustic soda. The bark needs to be stirred constantly. After boiling, the bark is then rinsed in clean water. The softened fibers are kept in water until they are processed. This needs to be done as quickly as possible so that they do not rot. At this stage, chlorine bleach may be added to either lighten the paper entirely or to create a mix of shades to create a marbled effect. This step has become necessary due to the lack of naturally light bark fibers. If the paper is to be colored, strong industrial dyes are used. These can vary from purple, red, green or pink, whatever the demand is. Wooden boards are sized to the paper being made. They are rubbed with soap so that the fibers do not stick. The fibers are arranged on wooden boards and beaten together into a thin flat mass. The best paper is made with long fibers arranged in a grid pattern to fit the board. Lesser quality paper is made from short masses arranged more haphazardly, but still beaten to the same effect. This maceration process liberates soluble carbohydrates that are in the cavities of the cell fibers and act as a kind of glue. The Ficus tree bark contains a high quantity of this substance allowing to make for firm but flexible paper. During the process, the stones are kept moist to keep the paper from sticking to it. The finished flat mass is then usually smoothed over with rounded orange peels. If there are any gaps after the maceration process, these are usually filled in by gluing small pieces of paper. Remaining on their boards, the pounded sheets are taken outside to dry. Drying times vary due to weather conditions. On dry and sunny days, this can take an hour or two, but in humid conditions it can take days. If the dried sheets are to be sold wholesale, they are then simply bundled. If to be sold retail, the edges are then trimmed with a blade. The production process in San Pablito has