How to draw a carpenter's three-point arc

Woodworking three-point arc drawing is as follows:

Let three points be a, b and c respectively. The steps for a carpenter to draw an arc are as follows: 1. Connect AB, BC and 2. Perpendicular bisector with AB and BC respectively. These two perpendicular bisector intersect with points 0 and 3. Draw an arc with point O as the center and the length of OA as the radius. This arc passes through three points: A, B and C, which is the arc that the carpenter wants to draw.

Woodworking craft

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).

It is said that in ancient times, "carpenters" were needed to build houses to eliminate disasters! When the evil spirits were suppressed, the carpenter took out his unique tools, stood on the roof and shouted words of good luck to ensure future peace and prosperity! 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.

On 20 17,10127 October, the list of carcinogens published by the International Agency for Research on Cancer of the World Health Organization was preliminarily sorted out for reference. Woodworking and joinery are in the list of Class 2B carcinogens.

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.