Make a sewing pattern from a packing tape mould

Step 3 Cut it free

I was able to cut the helmet free by cutting along the mark I made at the edge of the helmet. If your object is not as conveniently-shaped as my helmet, you might have to carefully cut down the middle or cut in a few places. If you have to do this, draw the lines first where you're going to cut. Place marks along this line as shown in the next step (step 4) so that you know where your cut lines match up.