Our local NAR Section president, Brian Coyle, first showed me how to use toothpicks to hold MMX igniters in place.
They fit easily into the small MMX nozzles and also ended up being a convenient stand-off, raising the model above the blast deflector.
Another plus - with the toothpick tip resting on the deflector, the down weight of the model (and connected clips) kept the igniter in.
By accident, I bought some square toothpicks when I meant to get the round ones. I was stuck using the square toothpicks when prepping some MMX engines.
You would think round toothpicks would be a better fit against the sidewalls of a round nozzle. But, the four sides of a square toothpick actually gets a tighter friction fit. The square edges have just a little more "tooth".
The only disadvantage, the square toothpicks can break if you were to press too hard into the nozzle. Just take it easy, just enough to hold the igniter wire in place.
Some of my best rocketry "finds" have been by accident.
Some of my best rocketry "finds" have been by accident.
Who said: "You can't put a square peg in a round hole?"
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