I have created a brush made with a custom resin blank I got from another artisan. It is absolutely gorgeous. I used TGN two band finest again to make a brush with the following dimensions:
Total height: 91mm
Handle height: 42mm
Loft height: 49mm
Knot: 24mm
http://i.imgur.com/dzOrH7T.jpg
http://i.imgur.com/TXvYtpO.jpg
http://i.imgur.com/5FO5Jxn.jpg
http://i.imgur.com/PxnMH3G.jpg