Place the chocolate in a microwave safe bowl. Microwave at half power for 1 minute.
Stir the chocolate, then continue to heat in the microwave at half power for 30 second intervals. Stir in between each interval until completely melted.
Add the corn syrup and stir until the chocolate comes together as a soft solid ball.
Wrap in plastic wrap or wax paper and allow to cool. Once it is completely cool it will feel hard. Kneed it with your hands for a few minutes and it will soften and become a pliable dough. If it gets too warm and soft from handling you can put it in the refrigerator too cool it down and make it workable again.
You can use a double boiler on the stove top to melt the chocolate instead of the microwave.