How to Make a Tennis Ball Mortar
Take the Pringles cans and clean them out thoroughly. , Take the can which will be your bottom tube and drill a 5mm hole about 3 centimeter (1.2 in) from the bottom. , Measure the two other cans diameters and work out 50% of the cans area., Cut the...
Step-by-Step Guide
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Step 1: Take the Pringles cans and clean them out thoroughly.
A=pi*r^2.
Take half of A and put it into the equation to find r. , Make them as round as possible using whatever means you have.
You could drill multiple holes then push out the cutting, use tin snips to cut the hole, or use a jigsaw with a blade capable of cutting metal. , (The rounder the hole is, the further the ball will fly!) , Use about 3 layers of duct tape to seal the cans tightly together.
If you wanted to you could also use glue to improve the seal. ,, The PVC tube is for protection. ,,, Make sure the fluid doesn't leak out the firing hole. ,, Wait 30 seconds for the gas to move through the barrel. , Then bring a long lit match up to the hole. -
Step 2: Take the can which will be your bottom tube and drill a 5mm hole about 3 centimeter (1.2 in) from the bottom.
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Step 3: Measure the two other cans diameters and work out 50% of the cans area.
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Step 4: Cut the holes out in both top cans to the size you have just calculated.
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Step 5: Sand the newly cut holes so they're nice and round.
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Step 6: Duct tape all the cans together
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Step 7: with the can with the firing hole on it at the bottom.
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Step 8: Heavily reinforce the bottom metal plate of the mortar with tape.
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Step 9: Drill a large hole in the PVC tubing so that when it encases the mortar the firing hole can be seen.
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Step 10: If it is cold in your area
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Step 11: try to heat up the tube for about 2 minutes;
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Step 12: Drop 2.5mls of lighter fluid down the barrel
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Step 13: making sure some reaches the very bottom.
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Step 14: Quickly insert the tennis ball
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Step 15: and use a stick or your hand to hold it firmly in place while you shake the mortar for 30 seconds.
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Step 16: Prop the mortar into a high firing angle and hold it in place with bricks.
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Step 17: Put the blast tube over the mortar making sure the inside hole can be seen.
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Step 18: Put on hearing protection.
Detailed Guide
A=pi*r^2.
Take half of A and put it into the equation to find r. , Make them as round as possible using whatever means you have.
You could drill multiple holes then push out the cutting, use tin snips to cut the hole, or use a jigsaw with a blade capable of cutting metal. , (The rounder the hole is, the further the ball will fly!) , Use about 3 layers of duct tape to seal the cans tightly together.
If you wanted to you could also use glue to improve the seal. ,, The PVC tube is for protection. ,,, Make sure the fluid doesn't leak out the firing hole. ,, Wait 30 seconds for the gas to move through the barrel. , Then bring a long lit match up to the hole.
About the Author
Terry Perez
A seasoned expert in education and learning, Terry Perez combines 10 years of experience with a passion for teaching. Terry's guides are known for their clarity and practical value.
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