Worm drive circular saws are tough saws. They are powerful and have a long shelf life. A regular circular saw is a good saw, but not quite as durable as worm drive.
a cannon
Earthworm.
When the circular muscles contract, they make the worm skinnier. When the longitudinal muslces contract, they make the worm shorter. This series of movements allows for the worm to move forward.
It is like a cylinder because it has 2 circular.
Most hand-held circular saws have no gears--the blade is mounted directly on the motor shaft. The exception is the original-design Skilsaw, which uses a worm gear to drive the blade. (The company makes both styles, today).
Because worm composting is healthier to the environment and healthier to the earth. :)
A worm drive.
Ring worm, which is a fungal infection is a highly contagious condition. The symptoms are an itchy rash which has red edges that give the lesions a circular appearance.
Divide 3.14 by the diametral pitch. Worm gears are a compact, efficient means of substantially decreasing speed and increasing torque.
Spur gears give 180 degree drive, and worm gears give 90 degree drive.
about the same as a regular worm.
worm