Tips and Advise on Buying Router Bits
Selecting a router bit is just as important as selecting the router itself, if not more. Having a top of the line router will be for nothing if the bits you use are poor quality.
These guidelines will help you buy quality router bits that will last and provide a smooth cut.
Buy carbide tipped router bits
The cutting edges on router bits are called flutes. Flutes are make from one of two materials, high strength steel or carbide. Steel router bits are not as hard as carbide tips and will loose their edge quicker. They are really designed for light use since they are less durable.
For general use carbide is the only way to go since the flutes will hold an edge longer and provide a smooth cut.
Profiling bits with a pilot bearing
profiling bits will either have a metal bushing that follows the edge of the woos or they will have a pilot bearing. Both of these will guide the bit around the edge of the stock and profile the edge accordingly. However since a bushing spins at the same rate the bit is turning it can easily burn or mar the surface of the wood.
A pilot bearing will simply rotate at the rate the bit is moved around the edge of the wood. It is best to choose a bit with a pilot bearing to avoid extra sanding or filling of damage caused by the bushing.
More flutes the better
I always try to find a router bit with more flutes. The more cutting surfaces the bit has the better it will cut and the smoother the surface will be. Bits with more flutes will have less chance of kick-back then a single flute bit.
Bigger is better, when bit shanks are concerned
Router bits are available with either 1/4" or 1/2" shank. Some routers will only accept 1/4" shank bits while other only accept 1/2". Some routers allow you to change the collet that holds the bit. This way you can use both size router bits.
When selecting a router choose on that will allow for both 1/4" and 1/2" bits. Always get the 1/2" shank bits when you can. There are a couple of reasons to do so.
- The larger shank will have less stress put on it when cutting.
This will prolong the life of the bit. - The 1/2" shank bits vibrate less and result in a cleaner smoother cut.
When buying router bits you truly get what you pay for. Buy cheap bit, get cheap bits. Although the difference in cost is certainly a factor when selecting router bits the difference between a cheap bit and a good bit is often less then the cost of one piece of hardwood lumber.