flanajb":3joj92cp said:
I have an axminster dovetail jig and you have to use a top mounted bearing cutter. The issue with this is that you have to do the cut in one hit and when you are using hardwoods it is too much. I was thinking of getting the leigh jig as I think that uses guide bushings. This will enable me to use a straight bit to take out the majority and to then use the dovetail cutter in one hit to finish the job?
I am also keen to understand whether they are worth there money, or whether they are just a gimic and a waste of time?
Thanks
I suppose it would Flan but:
The Leigh Jig is a great tool if you are in a hurry.But when you think about it, it's only as good as the routers and cutters you use with it.
However, to your idea of switching bits. The Leigh uses a
full depth cut, but you work from
front to rear so you don't make a full cut.You remove the waste from side to side, unless the gap is just the width of the cutter.
When using a smaller router such as an MOF96e Leigh also suggest using 8mm shank cutters in place of 1/4" shanks, to cut down on chatter. If you change cutters in the middle of a cut, I don't think that will suit the Leigh's way of operation.
I can't be sure on that, because I have never done it. In fact I always have two routers fitted with each bit I require, to save on time. If I was ultra-lazy I would also buy a spare finger plate so I could set fingers on that for the opposite end of the jig. I could then simply replace the finger plate and crack on.
I never had a bit break on me, and I find with a good powerful router (Elu 177E are mine) there really isn't much of a problem.
Maybe you might find removing waste with a straight cutter useful when using the smaller dovetail cutters on sliding dovetails. But other than that, I wouldn't go to the trouble of switching cutters in mid operation.
If Leigh do suggest this these days, then cutters are not what they used to be.
As for cutters, I find Titman, Wealden and Griffiths to be the best.
Griffiths I am unsure about because I think they might have ceased trading.
HTH
John