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Re:Who is the greatest knife steel metallurgist of all time? by jaclaz on Thursday July 16, 2020 @02:27PM (#23862098)
If we are talking multitools, a Leatherman would do nicely and it has blade lock (beside a S30V blade, possibly depending on models).

Depending on the country (and possibly in the US depending on states) a folding knife that can be opened with a flick of the hand/wrist may be considered illegal (switchblade or more accurately "gravity knife").

See:

https://www.akti.org/news/california-appellate-upholds-653k/

In some places there are also contrasting theories on the legality of the "lock open", i.e. a Victorinox multitool or an old Leatherman without lock would "pass" but a (say) Leatherman Charge/Wave/Surge would be border line[1] or just over the border[2].

[1] if considered "multitool"

[2] if considered "knife"

Re:Who is the greatest knife steel metallurgist of all time? by d_silin on Thursday July 16, 2020 @02:32PM (#23862163)
Leatherman cheapened out on steel for their knives. I got one in 154CM ten years ago, but now similar models are all in 440C.