For Bracers for roleplaying or just looking cool heres what you need.
1 Empty Water Bottle(16.9FL. OZ)
2 Duck Tape(Chrome looks best IMO)
3 Strong Scissors
4 Paper Towels
5 Sanding Block or Sanding Paper
6 Something to Crease into the lines of the bottle(Opt)
7 Sharp knife(i used and Ex-acto Knife for cutting tape) Opt
Step 1: Cutting the Bottle
Cut the bottle at the top removing the area where it starts to slope and the bottom and then down the the side so it opens up.
Step 2: Sanding and Taping
Take the sanding block to the edges so that it is not quite so sharp and then on the out side of the bottle so the tape sticks better.Then run tape from one side of the slit to the other, but not covering it until it is all taped and none of the bottle is showing from the outside
Step 3: Finishing Up
The tape should look even,i know mine is not but my knife wasn't very sharp, so heres the finished project