[Lucien Nunes]

It's not particularly difficult but slow and error-prone until you have had some practice. I don't think rewinding a small armature that is available off the shelf is worthwhile unless you are doing it mainly for your own interest. I've done various motor and generator repairs and have never been tempted despite being at least reasonably well equipped to do it. OTOH this size and rating of motor should be fairly forgiving as the wire is robust and easy to handle, and the turns few in number, so it's as good a place to start as any. The only thing you won't be able to do is to dynamically balance the finished job. As Kevin says that might be a noticeable problem given the running speed and the domestic application. In locales where wages are low and goods are relatively more expensive, you can get power tools rewound in roadside shacks by guys working with little more than a hammer and a screwdriver. They don't seem to worry about balancing, but then the aim is simply to get a working tool rather than one working to original spec.

You might be able to change the comm for one with hook-type risers for a couple of quid, in which case you have more options for termination. HMP solder might do as there's more heat dissipation surface and it's further from the bars. Riserless comms are cheaper and ideal for automated winding and assembly, hence used in original production.