Model Rocket Lauch Rod Cap
thingiverse
This is a launcher for your model rocket launch pad. It has stepped holes inside for 1/4", 3/16", and 1/8" launch rods. Most starter kits by Estes come with 1/8" rods, which are the standard size. I've experimented with the hole sizes and found that the current size, printed in PLA, fits snugly after a few uses. If your printer doesn't shrink holes as much as mine, you might need to adjust the values in the OpenScad file to make them tighter. The top holes are designed for a flag, streamer, launch key, or any other accessories you can think of. I printed this launcher in PLA at 30% infill, which gave it a noticeable weight. It's much more visible than the stock Estes launch cap but not as portable.
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