三级火箭配件Three stage rocket accessories
适合直径21mm的火箭发动机,或者烟花火箭
打印默认参数即可
此配件仅限教学使用,未成年人需要在成人监护下
请勿用于危险品上面,如果使用后果自行承担
Suitable for rocket engines with a diameter of 21mm, or fireworks rockets. Just print the default parameters. This accessory is for teaching use only. Minors need to be under adult supervision and do not use it on dangerous goods. If you use it, you will be responsible for the consequences.
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.