Step 1: Stuff You'll Need
- Thread appropriate for your fabric, I used a #80 polyester.
- Industrial Sewing Machine
- *Scrap of leather
- *Laser Cutter
* If you want a name patch.
Step 2: Cutting Your Pattern
Cut another piece 36" x 12", this will be the main compartment of you bag, I chose to use a different color of fabric, but it's obviously up to you. You can use one of your discs to trace an appropriate french curve at one of the 12" side's corners for the bag's closing flap. Cutting all of this to these dimensions gives you a fair amount of wiggle room as far a seam allowance, I tried to keep mine at a 1/4".
Cut one more piece 9" x 6", this is your H2O / PBR holster.
Step 3: Making Your Shoulder Strap
Turn right-side out. Warning, this may take some time and cause mild arthritis, be patient.
Iron flat with seam centered.
Sew each length with 1/4" from edge.
Fold ends over and iron flat, then sew 'em.
Step 4: Prepping the Bottle Holder and Bag Farbric
Fold in half, good side in, with 9" edges touching. Sew bottom of bottle holder closed with a 1/4" seam allowance. Then turn right-side out.
Iron and Sew the 12" edge (without the curve) of your 12" x 36" fabric.