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Alright since enough people have asked I'll post my setup.
Get a good set of screwdrivers. Get something JIS too. A cell phone repair kit, one of the nice ones with like 100 bits, get one of those. They come with other tools you can use to get into camera shit like pry bars and picks.
Get a good set of lens spanners for getting retaining rings on lenses and the tops of old rangefinders and SLRs off. Get the one with a couple of different bits, with large and small bits.
Get one of those lens filter clamps that gets filters off, likewise get the vice that fixes bent filter threads and makes them round again.
I highly recommend Japan Hobby Tool. Get their grease sets and get the rubber ring tool too. It's great for lens faces, those hard caps on the tops of advance levers, anything you need grip in a circle. They usually look like a pyramid and there's several of these cone shaped tools stacked on top of each other.
Get some good fluids. Naptha, lighter fluid, sewing machine oil, turbine oil, anything thin for lubricating small parts. Less is better, not bigger the blob the better the job. Use grease for focus helicoids. Thin oils for moving parts inside the camera. Super old shit like pre-war/post war sometimes require special lubricants, do your homework.
Get a good lens cleaning kit with microfiber cloths. Get some good small brushes and blowers to get dust off too. Get a good set of metal and nylon brushes to get dirt off of old stuff. And most importantly, get a good toolbox to put it all in.
Get two toothbrushes, one for old helicoid grease/oil and one for dry items. Get a few picks. Get a small 5" Tekton slip joint pliers set, these shits pic related. They are tiny and great for getting off small stubborn things without doing too much damage and you can always slip grip tape over the business end of it if you're worried about scratching.
Try to buy a can of assorted machine screws, I got lucky and scored a set from a repairman.
