Spring Mandrel

This is a mandrel for making a custom spring. See https://www.youtube.com/watch?v=gpG_jcGqtZ8 for how to use it. This is for use with another of my designs (https://cults3d.com/en/3d-model/various/10-round-umarex-notos-magazine and https://cults3d.com/en/3d-model/tool/air-venturi-avenger-22-20-round-magazine).

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