Creating a hollow shape and adding thickness
Hi! I use a cnc cutter with illustrator files. My files need to have the traceable lines around the edge only (not on the inside). I have this open heart shape that I did make and expand. Then added a stroke. At that point there is usually the original lines on the inside and I use merge. But not working. When I try to select and delete that inside line, the stroke goes away. Please let me know what I am doing wrong. Thanks so much!! Attaching screen shots and AI file.


AI file:
