MAH HAMMAX ARRIVED!
>>867268I have no idea, anon, but I'll try to help the best I can. Where are you located? My Google-Fu is strong, but I need to know what country you're in. I found an instructible (googled "diy wool coat"), but it doesn't give fabric weight. Merino wool isn't itchy, it's probably what I'd use in your position. It's going to be expensive, but the end product will be worth it.
>>867399Lol, I hoped you were talking about cm instead of mm. 5 stitches per millimeter would just about be enough to cut the fabric at the seam as you sew it.