Someone in the comments of the original model by @bubujiaoqv said it would be cool to have an actual utility knife version of this, so I gave it a shot. I tried not to change the blade geometry and make the utility razer fit inside and attach with 2 M3 screws and nuts. It turned out pretty secure and, I think, usable.

HOWEVER Please use at your own risk and be careful. I'm not sure how much trust I'd put in the locking mechanism under real-world use. Moreover, I certainly wouldn't recommend trusting MY work with your fingers 😅. While it does seem secure, I haven't tested how much abuse the blade can take without coming loose and I'd hate for someone to cut themself if something slipped.

Also, shoutout to this guy for his photobooth. Love this thing!