Re: wire-wrapping technique
Of course it depends of the circuit. If you are making a prototype of a SMPS you will need to make a PCB. You can do it by yourself. There are many techniques but I use one that is quite fast and cheap.
As a guidance, I design the pcp, print with a laser printer over Mylar sheet used for transparencies, transfer the image trough the use of an iron at abt 140 Centigrade degrees, later continue ...... you must remove the copper unneeded and voila !!! you have it.
If you need more details, let me know