伸缩宝剑Retractable sword

由于耗材的不同，收缩率不同，如出现叠套不住，滑脱的情况，可以在每个内层贴个1cm宽的胶带或者贴纸即可解决 Different materials have different shrinkage rates. If the parts fail to fit snugly and slip apart, apply 1cm-wide tape or stickers to each inner layer to solve this problem.