I gathered some of my best supplies to stretch a beautiful canvas today. I used some copper tacks and a really nice tack hammer and some A E Art Canvas primed lead oil ground. The tacks that I used to stretch this canvas are nice, but they're not the best that I have. The tacks that I used are the Paris Professional Canvas copper tacks and some of them got messed up while I was hammering them (photo 3 in gallery below). I also have some copper nails made by Chauvin, which are made in France and I plan to test out soon. The hammer that I like is a C. S. Osborne & Co. uphoslterer's hammer. C. S. Obsorne & Co. has been making tools since 1826.
It's great to use high quality materials, but sometimes it makes it a little intimidating to work on. I always have to remind myself "Yes, this canvas is beautiful, but I'm going to paint on this and if I mess it up, it's OK." Treat your materials with respect and don't be wasteful, but remember that they're not sacred idols either.