how to make this kinda functional reverse bear trap?

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(credit to vutus1 on twitter) i will be an usher in this halloween event, so im planning to do a reverse bear trap prop like the one in this video to jumpscare the attendees πŸ˜† i looked through his profile and he seems to be a gun prop maker. so i figured gun prop tutorials on yt might have it, but i got nothing so maybe not... πŸ’” i already have the pattern for the prop itself, i just need to know how to make the switch for the mouth part to open.. i was hoping someone here would know how to do it❓ or maybe if you know some tutorial videos similar to this thank you so muchhh ^_^   submitted by   /u/uwuwuwuwuwuuwuuwu [link]   [comments]