Scuba Emergency Shears Camera Arm Mount

Having easy access to a cutting tool is one of the critical lessons you learn as a scuba diver. Entanglement hazards like fishing line can be very scary and dangerous. A cutting tool in a pocket or leg sheath you can't reach when entangled is not going to help you. I carry a trilobite-style cutter on my wrist, but I also like to have a set of shears. They can snip heavy line or even steel wire that other knives and cutters can't touch. 

 

I always dive with my camera, so I designed this Mount that can attach to the camera arm with velcro straps. It is easy to pop on and off and always accessible. I previously used a nylon pouch but it was ugly and falling apart. This mount is a much more compact, clean and presentable. 

 

I printed with ABS but PETG would also be a good choice. PLA is not a good material for underwater objects, and it may be too brittle as well. The object is mostly solid with 3 walls, and I used 95% infill for pressure resistance underwater.

 

Attach the mount to your camera arm (or a DPV, Scooter, etc) with velcro straps or zip ties. The design of the generic ER shear I use is extremely common, so its likely to work with many brands. 

Download from MakerWorld:

https://makerworld.com/en/models/1694576-scuba-emergency-shears-camera-arm-mount#profileId-1796682

Edited August 13, 2025Aug 13 by Dave_Hicks
type

That’s great @Dave_Hicks

Thanks! I just downloaded the file.

On 8/12/2025 at 9:33 PM, Dave_Hicks said:

Scuba Emergency Shears Camera Arm Mount

Having easy access to a cutting tool is one of the critical lessons you learn as a scuba diver. Entanglement hazards like fishing line can be very scary and dangerous. A cutting tool in a pocket or leg sheath you can't reach when entangled is not going to help you. I carry a trilobite-style cutter on my wrist, but I also like to have a set of shears. They can snip heavy line or even steel wire that other knives and cutters can't touch. 

 

I always dive with my camera, so I designed this Mount that can attach to the camera arm with velcro straps. It is easy to pop on and off and always accessible. I previously used a nylon pouch but it was ugly and falling apart. This mount is a much more compact, clean and presentable. 

 

I printed with ABS but PETG would also be a good choice. PLA is not a good material for underwater objects, and it may be too brittle as well. The object is mostly solid with 3 walls, and I used 95% infill for pressure resistance underwater.

 

Attach the mount to your camera arm (or a DPV, Scooter, etc) with velcro straps or zip ties. The design of the generic ER shear I use is extremely common, so its likely to work with many brands. 

Download from MakerWorld:

https://makerworld.com/en/models/1694576-scuba-emergency-shears-camera-arm-mount#profileId-1796682

If Dave didn't print it, it means that it can't be done 🤣🤣🤣

Actually, they printed up very nicely. @Dave_Hicks Thank you for the file.

Excellent, hope it works well for you.

Added to our DIYpedia

Thanks @Dave_Hicks

Awesome! I revised the design a little to improve durability a bit. If you need another copy be sure to re-download.