I recently did one of mine with a self-adhesive synthetic neck cork I got from a firm called Karacha that sells stuff via Amazon and through eBay. It did a nice job! I have tried sythetic before with mixed results. It is quite springy and much more difficult to file/trim to a nice smooth edge on the join than cork is. Also, it seems to have less latitude in accepting different mouthpieces. If it is the right thickness for your neck/mouthpiecem then great, but for some set-ups it isn't thick enough. Also, it can't easily be sanded down as it tends to break up. I'd say its harder to make a nice job than with proper cork. I get all my stuff from Windcraft as a rule and keep a box of various cork, evo-stik, lighter fuel (dissolves old evo-stick), sharp blades, metal ruler, fine sandpaper, felt, PTFE taoe, heat shrink sleeving and an emery board. This also allows me to deal with situations when bits of other cork wear out or fall off my saxophones. For pads and such like, I go to the tech!