The luthier needs some special clamps, plenty of special clamps, of different kinds.
Here is a batch of rib clamps for stringed instruments, used for clamping the plates on the sides when gluing.
The clamping faces are padded with thick cork.
Notice that when you are using hot hide glue, the open time is very short, and you need to be fast.
To accelerate the process, I have designed this little PVC adapter you can see on the cordless drill, to tighten (just approach) the wing nuts quickly.