cannon，皮筋大炮，萝卜炮，红夷大炮大将军炮Red cannon, General cannon

底板需要稍微打磨一下间隙，卡口设计无需额外配件打印即可组装，其他位置都已添加公差，皮筋位于炮筒内两侧绑在炮闩上，炮闩后部栓绳上膛用，炮弹尾翼是圆的问就是方便出膛，组装看爆炸图很简单，俯仰角度螺杆调整，球头直接卡在炮尾。

The bottom plate needs to be slightly polished, the bezel design can be assembled without additional accessories printing, and other positions have been added tolerances, the rubber band is located in the barrel on both sides of the gun bolt, the rear bolt rope is loaded for loading, the shell tail is round, which is easy to assemble and see the explosion diagram, the pitch Angle is adjusted, the ball head is directly stuck in the tail of the gun.