Rotary Tools

Few tools provide the flexibility of a rotary tool, which basically consists of a small high-speed motor in a handheld enclosure that accepts various accessories which allow the user to sharpen, sand, drill, cut, polish, engrave, grind, etc.

What’s more, because there is such an incredible range of accessories and attachments available for these products, a rotary tool can prove to be an endless source of thoughtful gift ideas for years to come!

In addition to the obvious difference in size, rotary tools are distinguished from electric drills by their significantly higher speeds. These elevated speeds are the main reason why rotary tools can be used for applications where the use of a drill is not feasible.
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Rotary Saws (or Cut-Out Tools)
Rotary Tools
Applications
Accessories and Attachments
Keep in mind that the rotary saw (or cut-out tool) is different from the “standard” rotary tool:

Rotary Saws (or Cut-Out Tools)

This device uses specially designed bits under rotation to precision cut wood, plastic, ceramic tile and plasterboard. Unlike a jigsaw, whose blade is designed to cut in a single direction only, the rotary saw is a multidirectional tool that allows the user to change directions abruptly, making it the ideal tool for cutting around electrical outlets, etc.

Rotary saws are larger, heavier and built with more powerful motors (between 4 and 5 amps) than standard rotary tools and require the use of both hands. In essence, the rotary saw looks like an electric drill equipped with a guide to ensure that the bit remains perpendicular to the cutting surface. The tool’s superior power allows it to effectively replace a jigsaw and it may even be used to remove grout between ceramic tiles.

Cutting bits are fairly expensive and have a tendency to break, especially when proper operating techniques are not observed. This being said, the quality and precision of the cuts they provide may justify the purchase of a cut-out tool, particularly for those who intend to work on cut-out projects on a regular basis. When handled properly and at the right speed, a powerful, high quality tool will help extend the life of your cutting bits.

Rotary saw systems provide several practical accessories that can add to the overall functionality of the tool. For example: handles that allow the user to hold the tool like a jigsaw or router; an accessory designed to cut perfect circular holes; a flexible shaft; a wide range of “grinder” bits used to polish, grind, sand or cut; and several “router” type bits.

For heavy duty, repeated applications on hard materials such as wood and masonry, it is recommended that you use a plug-in model. Otherwise, a cordless model should be sufficient for most applications in addition to providing you with improved mobility.

Rotary Tools

Though they are designed for light duty applications, sculpting and crafting, rotary tools may be used for heavier duty applications on occasion - like cutting nails using a small grinding bit. Keep in mind that due to the reduced power of the rotary tool motor (approximately 1 to 2 amps), this type of project may take longer to complete. Small and light, the tool is typically handled with one hand, much like you would hold a pen.
Accessory bits (i.e. for engraving, routing, polishing, etc.) are not connected directly to the device. Instead, “collets” of varying diameters are used as “connectors”. The collet is mounted on the tool (the collet is then tightened using a key) and the bit is inserted into the collet. This mechanism allows for the quick and easy replacement of same-sized bits (designed to fit in the same collet). If the bit diameter is not the same as the previously installed unit, the corresponding collet must be installed.
To ensure that you get the most from your tool and its accessories, choose a variable-speed model (from 5,000 to 35,000 RPM). If you intend to sculpt wood or cut metal, for example, it is recommended that you use higher speeds; whereas lower speeds should be used for cutting plastic or polishing surfaces. Certain high-end models provide a small liquid crystal display for speed indication, making it easier to adjust.

If you are looking to buy your very first rotary tool, it is recommended that you purchase a complete set, including a carrying/storage case and several basic attachments. This type of kit will allow you to complete basic projects and further explore the tool’s many possibilities.

Other elements to watch for when buying a rotary tool:
  • A shaft blocking device used to facilitate the attachment changes;
  • The ability to change the motor brushes should they become worn (helps extend the motor life);
  • Gradual or soft start on power up (also helps extend the motor life);
  • Availability of a wide range of additional accessories from the manufacturer.
If the majority of your intended projects are heavy duty in nature or require extensive usage, choose a plug-in model. If, on the other hand, the tool will be used for arts and crafts and other various odd jobs around the house, the cordless model will provide you with improved flexibility.

As with any electrical device, it is recommended that you buy a recognised brand name to ensure that you receive a quality tool that provides superior durability and comes with a proper guarantee. What’s more, when it comes to rotary tools, recognised brands also offer the widest possible range of accessories and attachments, ensure their long-term availability and are committed to the ongoing development of new accessories.

Applications

The following is a (non-comprehensive) list of projects that you may undertake using the various available attachments:
  • Engraving on wood or metal
  • Cutting nails, screws and wood dowels
  • Cutting holes in plasterboard
  • Cutting holes in thin pieces of wood and fibreglass
  • Removing rust from metal surfaces
  • Cutting ceramic wall tiles
  • Drilling wood and metal
  • Polishing metals, stones, jewellery…and even fingernails!
  • Removing grout
  • Sanding the sharp edges of metals and cut glass
  • Sanding wood in hard-to-reach places
  • Sharpening (knives, axes, mower blades, scissors, chainsaws, shovels, etc.)
  • Cutting plumbing pipes (metal or plastic)
  • Grinding glass surfaces
  • Stripping paint from wood and metal surfaces (on small objects or in hard-to-reach places)
  • Shaping wood, metal and other materials
  • Routing
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