A paint mask is a piece of personal protective gear worn during construction and industrial activities. These masks come in many designs, and may protect the wearer against particulates and fumes. While the terms paint mask and dust mask are often used interchangeably, these items are quite different, and offer a significant difference in the level of protection they can provide. A paint mask can be worn for painting, as well as any number of activities involving harmful fumes, dust, or other toxic materials.
The basic dust mask resembles the surgical masks worn in medical facilities. It consists of a rectangle of reinforced fiber that is placed over the nose and mouth, with a rubber string that wraps around the head to hold it firmly in place. These masks are often known as nuisance masks because they protect the wearer only from nuisance materials like dust and large particles of particulate matter. They are completely ineffective against paint fumes and other toxic gases. A dust mask can be worn during some paint-related activities, such as scraping or sanding non-lead paint, but offers little protection against the fumes generated by painting.
Each sharpening jig consists of a wood or metal body and a clamp to hold the tool or blade in place. Depending on the design, it may also feature a clamp or clip used for fastening the jig to a grinding wheel. The jig holds the tool or blade at a specific angle, which allows the user to maintain uniform angle between this tool and the grinding wheel or stone. By using the same jig each time, users can replicate a cutting angle to ensure consistent results.
These jigs offer a number of advantages to new and experienced woodworkers alike. A sharpening jig teaches new users the correct angle to use when sharpening a tool, allowing them to achieve the desired cutting angle on the blade. It also helps the user achieve the same angle each time the tool is sharpened. Since workers often get used to the nuances of their tools, this consistency makes it easier to use tools correctly and achieve quality results. Consistent angling or beveling also helps to extend the life of a tool by reducing metal lost to bad sharpening techniques.
One potential drawback to using a sharpening jig is the potential safety risks involved. Using a jig while sharpening tools makes it easy to lose focus on the task at hand. This could lead to injuries or broken tools. It is also critical for users to use the correct jig size for each tool. Using a jig that's too small to hold a tool securely could allow the tool to fly away from the grinding wheel, leading to injury.