R/C Paradox - a pair of radio controlled duck decoys

Step 2 Cut the ballast off

I used a utility knife. depending on the hardness or thickness of your duck you may want to use a dremmel tool or a saw. It did help a little to heat up the blade with the heat gun. The ballast is what makes the duck float upright. This will also create the hole that we need for the periscope and upper part of the submarine to fit inside the duck.