How to Use a Pneumatic Pencil Grinder – Step-By-Step Guide

Pencil grinders rotate carbide burrs or mounted points to remove light material in detailed grinding, sculpting, and deburring tasks. Their slim, compact body allows them to access tight spaces and provide precise work.

They are available in steel or high-strength aluminum housings and feature rotary vane air motors. They are quiet and lightweight for easy handling.

Safety First

Pencil grinders are smaller, faster versions of die grinders and are used for precision deburring, finishing, and engraving. They are ideal for use with smaller carbide burs and mounted points and typically feature 1/8″ collet diameters. These compact, versatile tools have slide and twist throttle actuation for added flexibility. They are ideally suited for deburring, blending radius curves, mold finishing, and internal diameter grinding on machined components and cast parts. The rugged metal housings and powerful vane motors provide high output with low noise levels for operator comfort. These pencil-sized grinders are popular with turbine blade manufacturers, tool & die shops, and machine shops. 

Ensure all air lines are adequately secured to prevent entanglement during operation sessions.

Position Your Hands

The most important part of using a pneumatic pencil grinder is properly positioning your hands. If you’re not careful, you could accidentally get the tool in your hand and cut yourself. To avoid this, keep your hands away from the blade as much as possible, and always wear gloves when you use a pneumatic grinder. You should also wear a safety visor or face mask to protect your eyes.

Pneumatic pencil grinders are ideal for various applications, including deburring parts, cleaning, and finishing. They can be used with abrasive wheels, molded abrasives, and carbide burrs. Ensure that you are using the right abrasive disc for your needs. A wide range of sizes are available to suit your needs. Choosing the right size of abrasive wheel will ensure that you’re getting the best results from your pneumatic pencil grinder.

Waterproofing your pneumatic pencil grinder is also a good idea, especially if you use it in wet environments such as pools and construction sites. This will prevent the tool from becoming waterlogged and causing damage to its components. Waterproofing the tool will also help to maintain its performance and prolong its lifespan. Maintaining a proper maintenance schedule would help keep your tools in tip-top condition. For example, you should change the carbon brushes regularly to prevent them from wearing out and causing excessive sparking.

Check the Air Pressure

A pneumatic pencil grinder is a smaller, faster version of die grinders made in a thinner “pencil” shape to allow for precise and detailed work. They are ideal for various metal and woodworking applications, such as blending radius curves, deburring parts, and mold finishing. They are lightweight, require a 1/8″ collet for attachments, and are available in steel or high-strength aluminum housing. They can be powered by rotary vane or turbine-driven air motors and feature slide or twist throttle actuation.

When using pneumatic tools, ensure the tool and application’s air pressure are set correctly. Many service operators over-pressurize their tools, believing that more power equals better performance, which could lead to damage or even a life-threatening injury. Read the manufacturer’s guidelines and ensure you are using clean, dry air filtered and lubricated to the proper specifications. Drain all hoses and the air compressor tank daily to prevent moisture and dirt from building up. Ensuring the tools’ longevity and your team’s safety are achievable by following this practice.

Adjust the Speed

Pencil grinders have a smaller diameter than die grinders and can work in tight spaces. They can be used to engrave tools and parts or for deburring, contouring, and light grinding. They can be found with both steel and high-strength aluminum housings. They can have either slide or twist throttle actuation and are powered by rotary vane air motors. They have a maximum speed of 60,000 rpm and accept 1/8″ collet-size attachments.

When using a pencil grinder, safety precautions should be followed. Wear protective eyewear, tie back long hair, and remove jewelry to ensure safety. Also, keep the tool angled to prevent materials from flying away from the operator.

Check the Collet

A pneumatic pencil grinder is used for precise deburring and finishing on various metals, plastics, and composites. They have a smaller “pencil size” and a higher speed than die grinders, allowing them to access confined spaces for detail work. They are ideal for blending radius curves, etching, engraving, and deburring. They accept burs and mounted points with a 1/8″ shank diameter. They feature durable metal housings, powerful vane motors, and slide throttle or twist throttle actuation. They can be used in tool and die shops, machine shops, investment castings, aerospace projects, and jewelry production. They are also perfect for gaining entry to small bores on turbine blades.

Adjust the Angle

The final step is adjusting the angle to ensure you get the best results possible. Depending on the desired result, you can adjust this by turning the discs on your pneumatic pencil grinder clockwise or counterclockwise. Remember always to keep your safety in mind while using power tools, especially when changing the angle. Always wear appropriate gear, tie back long hair, and remove any jewelry to prevent injuries or accidents. Also, choose another day to work with a pneumatic pencil grinder if you are tired or under alcohol or drugs.

Pencil grinders are smaller, faster, and more ergonomic than die grinders. They are used for precision deburring, finishing, and engraving applications on turbine blades, tool & die shops, investment castings, and metal fabrications. They have various wheel sizes and attachments, featuring rotary vane or turbine-powered air motors and slide or twist throttle actuation.

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