Working with sheet brass can be very expensive if you run out and buy a bunch of new tools. Brass sheet can be worked with tools as simple as a hack saw,Files, drill, hammer and a pair of pliers. Throw in a vise with good jaws and you are pretty much set up. I might trade the hack saw for a jewelers saw and some fine blades for fancier work, but most of the brass on the front of a view camera is pretty simple with the hack saw with fine tooth blade, vise, file and drill. A set of inexpensive needle files are very handy for cleaning up the slots on the sliding lens holding part. Drill a series of smaller holes then file the slot. I like to use a raw hide mallet to straighten or bend the brass. Use a strip of hard wood (oak) on each side of the sheet positioned in the vice. Then gently with a third piece of hard wood
lay it against the brass you intend to bend. Then striking the wood with the raw hide hammer , tap the brass over to meet the wood in the vise to make a right angle bend. The vise makes a very good bending break especially if the jaws are lined with the above mentioned wood strips, or aluminum ange material to keep from marring your brass. For the most part, work with the sticky surface protecting paper in place, remove when you are finished. For the stationary lens holder it is just a rectangle with a few holes in it to mount to the camera. Go to a hardware store, Home Depot, Lowe's etc. and buy a brass kick panel/plate for a door There are various sizes available in a good thickness for camera hardware.
All in all a time consuming job, but very easy to do with simple tools.