Grenade drill model, principle model

根据B站博主视频仿制而来，此模型为原理示意，中间砸炮下需要更换铁管不能使用打印件支持为外径2.5毫米中空，T型固定栓长一块是专门用来趟平的，用烙铁将T型固定栓另一头烫平就拔不出来了，中间孔位用来锁紧铁管，擦炮掰开只留一半放入，重要事项，最下边爆炸部分用魔术纸代替不用擦炮。（非3D打印二外备件：砸炮，2.5毫米中空管，魔术纸某宝有卖，1个弹簧）以下为该博主视频https://www.bilibili.com/video/BV1MC4y1e7JB/?spm_id_from=333.999.0.0&vd_source=303d776156c57c5fb30e4a30f5678ab0 According to the B station blogger video copy, this model for the principle of the principle, the need to replace the iron pipe under the middle of the gun can not use the print support for the outer diameter of 2.5 mm hollow, a long piece of the T-type fixing bolt is specially used for leveling, with a soldering iron to iron the other end of the T-type fixing bolt can not be pulled out, the middle hole is used to lock the iron pipe, the gun is broken apart and only half is put in, important, The bottom part of the explosion is replaced by magic paper. (Non-3D printing second foreign spare parts: smash gun, 2.5mm empty tube, magic paper a treasure is sold, 1 spring) The following is the blogger's vi