The Steps

parts & labor
what's needed to get the job done

basics of function
overview of how to use the lens and shutter

the back, the strap, the lens
remove useless vintage roll-film parts; lens

the rangefinder
removing, taking apart

cutter-bar & inner parts
more useless vintage parts that have to go

ready the back
cutting; fitting the packfilm back; odds n ends

acquiring a 900 finder
removal & appropriation

fitting the finder & flash
measure, drill & fit

aesthetics
remove & re-leather; paint

adding the back & flash
screws, tape & wires

putting it all together
replace rangefinder, strap, flash & side door

reset infinity
setting the focus stop

completed
admire the work

Completed

There you have it. How I converted a 110A to a 110B, added an electronic hot-shoe and used new leather.

I truly hope my site was helpful and that the conversion gets you thinking about your own ideas.