Originally Posted by
thebigspendur
Bergeon are the best watch tools and AF are another a notch or two down. Esslinger sells the stuff but many of these outfits are geared more towards pros and have minimum orders. Jewelers Supplies is another retailer. Watch out for most of the junk out of the far east.
You'll need an opener for screw down backs and one for press ons. Some of the press ons are quite difficult to take off without bending the back and some are even more difficult to replace. They have simple pry off knives and more sophisticated tools for taking backs off which can run into a lot of money.
Of course one false move and you can ruin or permanently mar a case back. You'll also need spring bar tools to get the straps or bracelets off. They also have presses of various kinds and pads to "protect" a watch while removing or replacing a back.