Woodworking ellipse diagram

Woodworking drawing ellipse steps are as follows:

1, the length of the line is equal to the long axis, it falls in half at one end of the short axis, and it is drawn to the two intersections of the long axis, which is the distance between two nails.

2. Set two points on the long axis to see what the short axis is. Tie a rope around two points on the long axis, and the rope loop passes through one point on the short axis to form two equal triangles. Put a thin thread loosely on the board, that is, don't tighten the thread, but relax it.

3. Then press the two ends of the line with your fingernail, hold the pen in the other hand, tighten the thin line with the nib and circle it, and the trajectory pattern obtained on the board is an ellipse.

Introduction to carpentry

Woodworking is a craft, a unique technology and a common technology in architecture. It is one of the three traditional industries in China (namely, carpentry, wood industry and carpentry). In today's society, "woodworking" has a wide range of professional applications. For example, in the field of housing construction, shipbuilding, landscaping construction, and the most common decoration field.

Woodworking is a kind of work to complete various wooden projects for the owners in the process of house decoration, and its labor cost accounts for 40-60% of the labor cost of the whole home improvement project. Woodworking concrete construction projects: ceiling project (gypsum ceiling), wood partition project (light steel keel partition), customized furniture project, door cover, window cover project, living room background wall project, porch project.