Method

Step 1

Clip the adaptor plate into the base of the router.


Step 2

Select the appropriate bush and locking ring.


Step 3

Insert the bush into the recess in the router base and secure it in place with the locking ring.


The Offset

When using a router bush, there will always be an ‘offset’, which is the distance from edge of the cutter to the outside (or bearing) edge of the bush. For example, when a 20mm bush is used with a 10mm cutter, the offset is 5mm (20-10÷2). The dimensions given for each bush on the inside of the box lid also allow you to calculate the offset with different cutters, as seen from the chart.

Bush diameter
10 12 14 16 18 20 24 30
Router
6 2 3 4 5 6 7 9 12
8 – 2 3 4 5 6 8 11
10 – – 2 3 4 5 7 10
12 – – – 2 3 4 6 9

In conclusion, changing the offset by using a different cutter/bush combination expands the versatility of the router and enables it to be used in a variety of unique ways.