Step 1: Materials & Tools
2 foot by 5 foot 1/2 inch thick plywood
2 - 8 foot 2 x 4s
1 - 8 foot 1 x 4
2 - hurricane straps
1 scrap piece of 1 x 6 for the pigs
1 scrap piece of 1 x 2 for the small bases of the pig
nuts, bolts, nails
rubber tubing from Exercise Band
3 stuffed (plush) Angry Birds (you might be able to use homemade bean bags with angry birds on them).
Scroll saw (manual or electric)
Knife to cut tubing
Step 2: Build the Base
We built a 5 foot by 2 foot base out of 1 x 4s and 1/2 inch thick plywood. We wanted a platform big enough for people to stand on while pulling the exercise tubing back so the weight of the person on the base would help stabilize the sling shot structure. We added an additional 1x4 joist at one end and cut a 2 x 4 inch groove in the plywood base so we could slide the slingshot into the hole and attach the base of the slingshot with 2 bolts and 2 wing nuts. We designed this to be somewhat portable for ease of storage and transportation.