Vinegar + Bicarb rocket pad
Description
A Base / Plug for a standard sized soft drink / soda bottle, to turn it into a vinegar and bicarb rocket. There's plenty of bottle rocket designs out there for water rockets, that'll certainly go higher. This isn't to compete with them, it's intended to be simple, cheap and safe for kids to mess about with. Adult supervision is of course still recommended. You'll need a couple of wraps of PTFE (Teflon) tape around the plug, just for a nice snug fit in the bottle. I think that gasfitter tape is a little thicker, so should wear better than the budget stuff. It's still only a couple of dollars for a 10m roll.
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