now, as for your question

i will try to describe the process, as i am not able to post a diagram as of yet

to start with the commutator is shorted all around, to in effect make it a slip ring, do this by soldering all the bars/segments together.

i will assume you have stripped the armature core bare,

if i am not mistaken i used around 22 guage wire to wind with,

either start by soldering the start of the winding to the shaft or drill and screw it to the armature core, we will be adding a brush to pick up that end at the end of the shaft later

if you have 10 slots,

number the slots 1 thru 10

starting with slot 3 and 4 wind it full of wire, keep in mind the direction you are winding it,

then skip over and fill slots 2 and 5

then skip over and half fill slots 1 and 6

then skip over and fill slots 8 and 9 continueing in the same direction as viewed thru the core

skip over to and fill slots 7 and 10

then skip over to slots 1 and 6 and finish filling.

it would be nice to keep track of the turn count and try to keep them even, even if you are off a few turns it won't make alot of difference, we arent makeing computer grade ac power here. and as for balance, the speed is so low that it won't make a lot of difference either.

to end solder the wire to the shorted commutator

to take power off , connect to the brush/s one output lead

fab a end brush to rub on the end of the shaft for the other output lead.
dont try to just take it off the case as it will try to go thru the bushings, and maybe lose some power or shorten their life

hopefully this will give you the general idea

sometimes you will have unequal slot arrangments, and will have to wind one side more than the other, which will end up with an unusual waveform, higher positive cycle lower negative cycle, or visa versa, but if you are going to rectify it won't make alot of difference anyway.

one more thing, add some insulation where the windings cross over to the other pole, seems they have a tendency to wear thru and short there.

when done if you scope the waveform, you will note some ragged edges or spikes from the pole/slots of the armature, here again, we ain't makeing computer grade power, but good enuf to rectify