Well Maximillan, here this one is about finished.
To your questions:
I hand cut and form every piece from scratch of exotic wood (Cocobolo used in this one), Brass flat and round stock from hardware or hobby stores, some tiny screws / nuts & bolts ordered from Micro-fasteners store. I have also found some metal and wood stock on the internet.
Silver soldering is not like soft lead soldering; it is more like brazing/welding. I usually use a butane micro torch, but for larger parts I sometimes need to use an oxy/act torch, and I use brazing flux sparingly. The tools I employ are basic and simple--jewelers saws and files, X-acto carving blades and a simple small bench drill press. For the threaded parts I use tap and die sets purchased at micro-tool sites. Mostly keep in mind that I am a scavenger first and am known to repurpose items I find.
Just jump in and try it. You will grow as you go along. Ralph