Halo is the most classic and popular OTF knife of microtech, with exquisite structure and beautiful shape. I made this 3D printed model and changed it into a comb (for harmony，you can also download the STL file of the original blade here).
You need a 0.3X4X10mm spring, a 0.8X7X150mm spring (springs of similar specifications can be used, but you need to try to match them), and 8 M2x10 self-tapping screws.This model is designed using Bambu PLA. Since the shrinkage rate of each filament is different, you may need to polish some small details when using other filaments.If the blade does not click into place due to insufficient spring force, you can shake the knife to make sure it clicks into place while pressing the button to eject the blade.

光晕是microtech最经典最受欢迎的OTF刀，该刀结构精巧、造型优美。我制作了这3d打印模型，并将其改为梳子（为了和谐，你也可以在这里下载原版刀片的STL文件）。
你需要一根0.3X4X10mm的弹簧、一根0.6X7X150mm的弹簧（可以相近规格的弹簧，但需要尝试匹配度），以及8颗M2x10的自攻螺丝。本模型是使用Bambu PLA设计，由于每种耗材收缩率有所差别，你使用其他耗材可能需要适当打磨下个别小细节。如果因为弹簧力度不够，刀片未能卡到位，可以在按键刀片弹出的同时，甩刀辅助确保卡到位。