Got a link to the one you used?

Honestly, half-frozen usually means the top layer is solid ice but you can still slosh liquid underneath. Tbh you don't want to pour that into a cooler, it'll just melt everything else faster. If it's a drink, you gotta shake it real hard to break up the ice chunks before you open it. Otherwise it's gonna explode all over you when the pressure releases.

Oh man, I was just reading a thread where a guy said his whole crew missed a laser that got nudged by a conduit run. They had to tear out a section of framing. So yeah, on anything that really matters, I definitely snap a chalk line or check with a string. That old school method is a lifesaver for a final sign-off. What's the worst laser fail you've seen?