How are router guide bushings calculated?
How are router guide bushings calculated?
Figuring template offset Offset is the distance from the outside of the guide bushing tube to the cutting edge of the router bit. This dimension determines where the bit cuts the workpiece. To figure the offset, measure the outside diameter (OD) of the guide bushing tube and subtract the diameter of the bit.
What are router guide bushes for?
Guide bushes are used when material is required to be routed to a set pattern or shape. They are used in conjunction with worktop jigs, lock jigs, hinge jigs, sign writing jigs and any other form of router copying template.
How thick should a router template be?
½” thick
Template Making. Generally speaking, ½” thick plywood or Medium Density Fiberboard (MDF) is a good choice for template material. Regardless of size or shape of your cut the template must be sufficiently larger to support the router base and provide places to clamp or nail the template in place.
How do I find my router bushing offset?
You can calculate your offset by taking the guide-bushing diameter, subtracting the bit diameter and dividing by two.
How is router bushing offset calculated?
The simple formula for calculating the offset is: (Outside diameter of guide bush – diameter of cutter)/2. For example, with a 30mm guide bush and a 10 mm cutter, the offset is (30-10)/2 = 10mm.
What are router bit bushings?
Guide bushings are simple devices that when used properly, extend the capabilities of your router. The bushing fits into the hole in the routers baseplate and is designed to follow a template, which guides the router bit, transferring the templates shape to another piece of wood.
What are router template guides used for?
Router template guides fit into the base of your router and direct it along the edge of a template. They can be used to accurately rout the edge of your stock to a specific shape, to rout cavities and mortises, or even to accurately bore positioned holes.