To be fair, I did have a go at making my own. Then after 1,000 rings (which basically left me with a chainmail scarf) I did some quick calculations and realised that to make the full shirt and coif would take over 20,000 rings and cost me over £200. It would also take a lot of time. So, on the recommendation of another Merlin cosplayer who wears chainmail, I brought a chainmail shirt and coif from gifts-mart on eBay. It's designed for recreational purposes, so is lightweight and comfortable to wear. I need to make a few minor adjustments and fix where some of the rings have come loose, but it'll do the job just fine. In a way, it is a bit of a bummer that I can't wear a shirt I made myself but at least I now know how to weave basic chainmail.