Changes

====Terminology====

====Terminology====

Each bit is made for a different job. The wood shop has a wide assortment, although less common types may be unavailable. It should be noted that different bit sizes and profiles will operate better at different speeds. The amount of material that is being removed in each pass as well as the hardness of the wood should determine the speed the router is ran. You should not attempt to use any bits over 1" in diameter as these are designed for use in a router table and could create a dangerous situation. 

Each bit is made for a different job. The wood shop has a wide assortment, although less common types may be unavailable. It should be noted that different bit sizes and profiles will operate better at different speeds. The amount of material that is being removed in each pass as well as the hardness of the wood should determine the speed.

Occasionally routing can leave burn marks on the work piece. This usually means that the bit in the router has become dull, let a shop supervisor know if a bit seems dull. Sometimes the burning is due to build up of resin and other gunk (a technical term) on the back of the blade insulating the bit and allowing for heat to build up, make sure to keep bits clean. A final possible cause of burning wood while routing is taking passes that are too slow or setting the router bit speed too high. A good rule of thumb for setting router bit speed is the larger the cutter the slower the speed.  Set the spindle speed adjustment to around 20000 RPM when starting out and you can adjust as needed. If a specific cutter is marked with a recommended speed start with that.  

Occasionally routing can leave burn marks on the workpiece. This can happen when the workpiece is fed through the router too slowly, but it can also mean that the bit in the router has become dull. Let a shop supervisor know if a bit seems dull. Sometimes the burning is due to build up of resin and other gunk (a technical term) on the backside of the blade which insulates the bit and allows for heat to build up. Inspect bits before using, and make sure they look clean. If the bit seems both clean and sharp, the cause of burning on you workpiece is either a feed rate that is too slow or a router bit speed that is too high. A good rule of thumb for setting the router bit speed is the larger the cutter the slower the speed.  Usually the router table will be set to 20000 RPM. If you plan to use a larger bit and reduce the speed of the router, ask a shop supervisor for assistance.

[[Image:RouterBits.jpg|331px|none]]

[[Image:RouterBits.jpg|331px|none]]