Thank you all for the reply.
I was today using the abrafile to cut out a electric panel on one of our test rigs at work,I could of cut a hole big enough and then split a band saw blade and re–welded it, i could also of used the flypress and cut out as near as possible to the shape that i required.
I have pad saws and peicing saws of differing shapes and sizes but i find that the abrafile because you can change direction because it has cutting teeth all around the saw is most usefull.
I have considered buying a fret saw but for the amount of times i think i would use it outways the expence,but as they say if you had it i would proberly use it more.
One of the people from work who makes clocks says his dad uses a simiar saw in france sold under a nother name, as with my father he used to refer to them as Davis files by the old inventor until another firm started to make them calling them Abrafile.