What can I do if the sections do not form ribbons? FAQ Report The specimen block is too cold: Warm up the specimen. The paraffin is too hard: Re-embed the specimen in softer paraffin. Immerse the entire block in softer paraffin - a thin "glued on" layer will stick to the block. You might use a dull blade: Please use another area of the blade or a new blade. The clearance angle is too big: Please try systematically to adjust the clearance angle settings until you have found the optimum angle.