Just how much weight can a cam hold? Check out this video as a giant boulder is suspended by a single cam.
For most of us it's hard to visualize what a Kilonewton is or to try imagine how much force a cam is capable of holding.
Confidence in a cam placement can vary wildly depending on whether you are on the ground watching your partner, or if you are the one sketching away above it.
When on the ground climbers will often say:
"oh yeah, you could hang a truck off that!!".
However, when climbing above that same placement a climber might express some doubt that the cam will hold their possible fall.
"Oh dude! ..think the cam might blow!! I gotta downclimb!"
In this great video DMM gives a simple demo of how much weight one of their Dragon Cams can hold.