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I always thought a 4-inch knife was fine for cutting drywall until I saw a guy in Kansas City use a 6-inch one last month.
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haydenwright6mo ago
Ever wonder if the drywall itself changed? Like maybe older houses had thicker board or something... a 4-inch blade might have been fine back in the day but now you need the extra reach. Could be why that guy had the bigger knife.
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emery_lane6mo ago
My uncle's 1970s house has half-inch drywall, but newer builds often use 5/8-inch for fire walls. You're right, @haydenwright, that extra eighth can make a 6-inch knife way better for taping.
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nathan2896mo ago
Remember my buddy who tried using a 4-inch knife on a new build and totally botched the tape job?
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