Origin of circular saw
Examples from the Web for circular saw
Many kinds of work, however, can be done only on the circular-saw.
The circular-saw is not a perfectly flat disc, but when at rest is slightly convex on one side and concave on the other.
In this way, it is possible to cut very large logs with the circular-saw and with less waste.
After this the block is taken to a circular-saw, which cuts off the corners, and reduces it to the form of an octagon.