I have a number of flush mounted wall-mounting brackets to install on wooden boards. I want to create a template for my plunge router so I can accurately inlay them flush as you would a hinge for example. I understand that the MDF router template hole needs to be larger than the bracket to allow for the offset between the collar and the 3.2mm spiral bit (the brackets are only 44mm x 16mm x 4mm and rounded at each end). What I want to know is how do I draw the bracket shape exactly, say, 5mm larger than the bracket all round so I can cut it out of MDF with a jeweller's saw (it will be a complete hole so cannot use my bandsaw!) - freehand will not be accurate enough. I expect it is a really simple exercise to do but I can't see how to do it accurately!