This train aid is continuation of series "Higher school of carving", uniting book and manuals for self-tuition on artistic treatment of tree. It is addressed first of all to the teachers of technology, fine art, masters of folk artistic trades - all those, who would like to bring in a variety in the on-line tutorial, and also to make amateurs with own hands: to the men and women, pensioners and to the invalids, children and adults, - to all people without depending on their age, physical capabilities and level of preparation.A book is intended both for the independent mastering of practical skills of carving and for employments in a group, for example, on the lessons of technology at school. Implementation of screw-thread is expounded in a manual for self-tuition stage-by-stage, step by step, and accompanied by the detailed description, necessary pictures, photos and by explanations. An author tried to guess all possible difficulties that can arise up for a reader, independently understanding the elements of carving, and to give exhaustive answers on them.A manual will be interesting to both the reader becoming familiar with to the enthralling art of carving and experience master open for new ideas and inspiration. A manual for self-tuition includes all necessary information about wood, instrument, technique safety, picture and other aspects of work of carver. This information creates a clear, slender theoretical base sufficient for passing directly to practice of carving and for further creation of valuable wares. Thus a reader in earnest addicting to artistic treatment of wood can continue a self-education due to additional materials.