Instructables

The Manta Drive: proof-of-concept for an ROV propulsion system.

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Step 2: Materials and tools

All I actually bought for this project were the magnets - small, countersunk neodymium magnets from ebay.

The rest was made of material I already had stocked in my shed - scrap timber, bamboo skewers and a pair of dead ball-point pens.

Similarly, no specialist tools were required - a junior hacksaw with blades for wood and metal, a hot-glue gun, drill and my multi-tool.

Health and Safety

You'll be using hot things, sharp things and very whizzy things. Be careful.
Take particular care with neodymium magnets - they can nip painfully, and will shatter if allowed to fly together.
 
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