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Is there something else I should be using or just buy more blades and change them more regularly?
Apols for bezos link, but I use one of these ceramic cutters, which has lasted a lot longer than any metal blade has: https://www.amazon.co.uk/gp/product/B07KYWLVCQ/
It's got a magnet in so I can stick it to the fridge, and it's fairly difficult to injure yourself with it, which from personal experience has not applied to standard stanley blades or breadknives 😅
There are other variations for different uses, apparently the mini one i have isnt recommended for cutting up cardboard, but the cardboard police haven't been around to arrest me yet for using it on cardboard
bothwell-
use one of these ceramic cutters
The Slice ceramics are good (I use one in my Gerber EAB) in terms of staying sharp, but they're brittle so it's easier to break one, compared with steel, when chopping up heavy corrugated boxes. I use the breadknife, and answer to nobody for it 😊
gbj_tester
I seem to spend an inordinate amount of time chopping up cardboard boxes for recycling and doing this just kills stanley knife blades.
Is there something else I should be using or just buy more blades and change them more regularly?