Here's the frock coat I made inspired by Colum MacKenzie's gathering coat.
I started with J.P. Ryan's 1750’s Coat with Military Variations for the Officer or Enlisted Man. I used the civilian coat cut a bit shorter than the length of the enlisted coat. The shorter length is made for riding horseback (unlikely in reality) and also to give enough room for my great kilt. I like the instructions provided with the pattern and the illustrations are good. It would be nice if there were videos to go with it, but I figured it out eventually.
As this is my first coat, I didn't want to spend a lot of money, so I used a 50/50 wool blend Melton fabric and cotton lining. The buttons are inexpensive ones found online from China. Instead of horsehair interfacing, I used a medium weight synthetic. I also saved money by using polyester buttonhole thread instead of silk twist and waxed cord instead of gimp. There is also none of the lace found on Colin's coat. The next coat will be tartan with silk or linen for the lining.
Machine stitched where it can be hidden and by hand wherever visible. The buttonholes are cut with a chisel and hand stitched with gimp cord and heavy polyester thread.
The buttons are pushed through holes for the button shaft made with an awl and held in place with twill tape. The tape is threaded through the shafts and sewn at each end inside the coat, between the outer layer and the lining.
