Better routers are equipped with a speed adjustment that allows for speed adjustment typically ranging from around 8,000 to 24,000 rpm (revolutions per minute). The reason is that not all router bits can be safely or optimally run at the same speed. Larger router bits have more mass and therefore a potential to create forceful vibration at higher speeds.
It's important understand what router speed actually measures. "Revolutions per minute" is simply a measure of the number of times that the bit makes a complete revolution in a given period of time, and not a measure of the speed at which the body and cutting surfaces of the bit are actually traveling. The outer perimeter of a 3-1/2" diameter bit is actually traveling significantly faster at 24,000 rpm (and much faster than it should be) than a 1/2" straight bit's cutting surface would be at the same shaft speed.
Power Tool Router
Manufacturers often supply maximum free-running speeds for the router bits they sell. The maximum speed for a given bit is the maximum speed at which it can be safely operated, and may not be the best speed for the task. There are other factors to consider: router horsepower (a less powerful router will slow down when it's driving a large bit through a cut), feed rate, quality and condition of the bit, and the cutting properties of the material. It is impractical to give a list of specific speeds that will work well in every situation.
In general, a faster speed is more desirable than a slower one, for the simple reason that a faster speed provides more cuts per inch, and more cuts per inch normally yield a smoother cut. Using sharp, high quality bits and using the correct feed rate go hand in hand with bit speed in making a clean cut. Make practice cuts with a new bit until you are able to produce a smooth, even feed rate that is neither so fast that it produces a rough cut, or so slow that it results in burnishing and burn marks.
The chart below offers speed guidelines for the maximum safe free running speed of bits of various diameters. This is supplied for general reference - manufacturer's guidelines should be consulted:
Router Bit Diameter Maximum Speed
Up to 1" 22,000 - 24,000 rpm
1" to 2" 18,000 - 22,000 rpm
2" to 2-1/2" 12,000 - 16,000 rpm
2-1/2" to 3-1/2" 8,000 - 12,000 rpm
Special Price!!! Dremel 220-01 Rotary Tool Work Station
Nov 09, 2011 15:36:53
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Dremel 220-01 Rotary Tool Work Station Feature
- Rotary tool work station holds more than a dozen Dremel tool models
- Converts to drill press; drills at 90-degree vertical angle and in 15-degree increments to 90 degrees horizontal
- Features a sturdy metal 56-square-inch base
- Includes work station, mounting wrench, and instructions; rotary tool not included
- Backed by a one-year limited warranty
Dremel 220-01 Rotary Tool Work Station Overview
Turn that Dremel rotary tool into a drill press with this rotary tool workstation from Dremel. The station accepts several Dremel models to drill perpendicular and angled holes in 15-degree increments from 90 degrees vertical to 90 degrees horizontal. Inch and metric markings on the base make for accurate drilling of workpieces. Depth markings with depth stop provide consistent depth adjustment, while the sturdy metal base with four clamping points holds workpieces securely in place. The workstation also holds the rotary tool steady for other tasks, such as polishing metal objects, sanding different shapes and grinding metal pieces--with greater precision and less fatigue. The stations telescoping shaft allows adjustments to any height between 16 and 29 inches. On-board storage for drill bits, cords, and wrenches keep them all in handy reach.Dremel 220-01 Rotary Tool Work Station Specifications
Ideal for crafts, hobbies, metal working, and a variety of around-the-house jobs, the 220-01 Dremel Work Station transforms any Dremel rotary tool into a tabletop drill press. It can be bolted on to your workbench, and it has the versatility to operate as a tool holder, flex shaft holder, and drill press. This rotary tool work station holds Dremel rotary tool models 4000, 3000, 400, 398, 395, 300, 285, 275, 200, 100, 8200, 800, 780, 770, and 7700 (tool not included). |
 The Dremel Work Station can be tilted in 15-degree increments. View larger. |
The Dremel Work Station gives you the flexibility to tackle hobbies, fix-it renovations, or special projects without having to invest in a variety of separate tools and attachments. Its stable, sturdy design lets you perform low-torque, high-speed jobs like drilling holes in metal to make earrings and bracelets, or sanding even the most detailed pieces of an architectural model. Measuring 56 square inches, and offering a drill depth of two inches, the sturdy, slotted base has four clamping points, while a rack and pinion feed lever ensures smooth, accurate operation.
Flexibility for Intricate Work
Whether you're buffing stones or sanding parts of a radio-controlled airplane, you'll appreciate that you can tilt the Dremel Work Station in 15-degree increments from 15 to 90 degrees horizontal -- perfect for more focused, intricate work. When you're grinding or polishing materials, the tool holder prevents slippage by keeping tools at 90 degrees, and the telescoping FlexShaft tool stand lets you adjust to any height between 16 and 29 inches. Once you've finished working for the day, place bits, collets, and wrenches in the tool caddy for easy clean-up and storage.
Easy Setup and Durable, User-Friendly Design
Easy to set up and operate, the Work Station features straightforward, durable construction. Clips keep messy cords from obscuring your visibility as you work, and inch and metric markings on the base allow for precise measurements and ensure that your adjustments are consistent, too. Compatible rotary tools attach and detach smoothly so you can polish, grind, or drill holes in stone, metal, or glass for rivets, eyelets, or cold connections of any sort.
What's in the Box
Work Station, accessory nest, mounting wrench, and instructions
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