In this Instructable, you will learn how to make a fun and awesome Tennis Ball Mortar. Some supplies you will need are simple household objects, lighter fluid, and a regular tennis ball. I am not responsible for any injuries or damages to properties. I hope you have fun!!

Step 1: Supplies That You Will Need

For this Instructable, you will need.......
1. 3 cardboard tubes or cans approximately 10 inches long by 2 1\2 inches in diameter(potato chip cans work well)
2.tin snips
3.Duct tape or a strong type of tape
4.3\16-inch drill or punch
5.lighter fluid
6. tennis ball
7. wooden stick about 12 inches long
8.Thin walled, 4-inch diameter pvc sewer pipe( length equal to length of cardboard tubes or cans)
9. sand paper or sander

Step 2: Making the Tennis Ball Montar

In this step, we are going to make the Mortar:
1.Pick one empty tube or can to be the base tube.On the tube or can, drill a clean 3\16 hole about one inch from the bottom.
2.On the other two tubes or cans,puncture the bottom end with a tin snips so that you have one round-shaped hole in the bottom.
(baffles are the key to a good mortar, so make your baffles carefully.)
3.File or sand the cut holes to dull them so they are safe to handle
4.Assemble the three cans or tubes to the correct order.To put them together, cover the entire assembly with no more than three layers of duct tape or strong tape. Make the seams between the cans or tubes airtight.(Be sure to leave the firing hole clear and open.)
5.Now make a PVC blast tube out of the 4inch PVC pipe.The PVC tube should be made just as long enough to contain the entire Tennis Ball Mortar when slipped in. Drill a large hole in the blast PVC tube that equals to the location of the firing hole.

Step 3: Firing the Tennis Ball Montar

1.Use no more than 1\2 teaspoon of the lighter fluid.
2.Pour or drip the fluid down the muzzle(make sure some of the fluid gets the the bottom of the Mortar.)
3.Put the tennis Ball into the muzzle of the Mortar and take the wooden stick and press against the ball so it stays in place.
4.Shake the Mortar so it evenly spreads the fluid.
5.Move the Mortar to the firing position against rocks or trees
6.Take a lighter or a very long match and light it under the firing hole. It should fire after a few seconds.
NOTICE:The Mortar is very loud and should be done in a large field or area. Hope you have fun!!!!!