The materials required are a clay block, acetone and thin acetone film (.002 to .003 in. thick) with a matte finish on 1 side. The sample is cut with a saw to produce a flat surface which is then polished with silicon carbide grit, the final polish being with no. 400 size material. The polished surface is etched in dilute (about 10%) HCl for a few seconds, and is then washed and thoroughly dried. The dry sample is placed on the clay block with the flat side up and close to horizontal. Acetone is applied to the etched surface, and the frosted side of the acetone peel is then rolled on from 1 edge. The sample is dry enough to move in about 10 sec. The sample is then placed face down on a flat surface and allowed to dry thoroughly for several hours. The advantages of this method are ease of application, maximum detail in the peel, and minimum shrinkage and curling after the peel is removed.