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using couplers
steps:
Step 1: Marking the Bag
Remove ring from coupler base. Drop the coupler base, narrow end first, into the bag and push it down as far as you can.
For Featherweight Bags: Using a pen or pencil, mark the spot on the outside where the bottom screw thread (closest to tip) is outlined against the bag material.
For Disposable Bags: Mark a spot on the outside that is 1/4 inch BELOW the bottom screw thread.
Step 2: Cutting the Bag
Push the coupler base up into the bag so that you can cut an opening at the mark.
Step 3: Position Coupler Base and Tip
Push the coupler base down through the opening. One thread should be showing. Place a decorating tip over the part of the base extending from the bag.
Step 4: Lock Tip in Place
Put the ring over the tip and twist it on, locking the tip in place.
thanks>>http://www.bakedecoratecelebrate.com/techniques/usingcouplers.cfm?cat=5
