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A rotary saw, spiral cut saw, RotoZip or cut out tool is a type of mechanically powered saw used for making accurate cuts without the need for a pilot hole in wallboard, plywood, or another thin, solid material.
The Rotozip Tool Corp was a company started by Bob Kopras, an American drywall installer who pioneered this type of saw. Rotozip was later acquired by Bosch Tool Corp. in 2003.[1]
This type of tool was originally developed for making cut-outs in drywall but it was later discovered that myriad other materials could easily be cut using the tool.[2]
The design is similar to a small wood router but usually features only one handle for single-handed operation. Bits look similar to a twist drill or end mill; some cut on the upward twist, and some cut downwards. The cutting edge on the flutes actually slices (either upwards or downwards) through the material which means that they can cut in any direction.[3]
Rotary saws come in various types and configurations, each designed for specific tasks and materials. Some common types include:
- **Standard Rotary Saws**: Typically used for drywall and light materials.
- **Heavy-Duty Rotary Saws**: Designed for tougher materials such as tiles, metals, and plastics.[4]
- **Corded and Cordless Versions**: Corded rotary saws offer continuous power, while cordless versions provide portability and convenience.[5]
Rotary saws are versatile tools used in various applications, including:
- **Construction and Renovation**: For cutting drywall, plywood, and other construction materials.[6]
- **Electrical and Plumbing**: To create openings for electrical outlets, switches, and plumbing fixtures.[7]
- **Hobby and Craft**: Used in model making, woodworking, and other craft projects.[8]
- **Automotive**: Employed in auto body repair and modification tasks.[9]
Using a rotary saw requires specific operational steps and safety measures to prevent accidents and ensure efficient cutting:
- **Setup**: Secure the material to be cut and select the appropriate bit for the material.[10]
- **Cutting Technique**: Hold the tool firmly, switch it on, and guide it along the desired cutting path.[11]
- **Safety Gear**: Always wear safety goggles, gloves, and a dust mask to protect against debris and dust.[12]
- **Maintenance**: Regularly check and replace worn-out bits, and clean the tool to maintain its performance.[13]
A rotary reciprocating saw is a type of saw that spins a cutting implement around a rotary axis, instead of thrusting it along a linear axis. The first use of such devices was in medicine, where cutting through bone warranted the need for a saw with minimal stroke length, and a cutting action that could be implemented through depth cut rather than a follow-through cut.[14] The timber industry now also uses this type of action to cut in the same manner.[15] A particular manufacturer has a hand-held version for making difficult cuts, which would not be possible with other implements.[16]
Firefighters also use rotary saws to cut holes through walls to access certain areas quickly to fight fires and rescue civilians.[17]
- Reciprocating saw
- Radial arm saw
- Bone cutter (medical)
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