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Choose the Refill Before the Knife: 3 Replaceable-Blade Tools

The replacement blade is the part of a utility knife you'll buy again. That makes the refill worth choosing before the handle. A short trapezoid-shaped utility blade and a 3.5-inch drop-point replacement can both give you a fresh edge, but…

Choose the Refill Before the Knife: 3 Replaceable-Blade Tools

We haven't written up this one. The Gadgeteer has the full story — the link below goes straight to it.

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Characterize Ship Cutoffs With Twelve Frozen Instants

Move one holiday check only after a frozen cutoff table holds. A messy ship function hides three clocks in one return. An early extract can flip a same-day answer without a failing test.

  • Function canshiptoday determines shipment feasibility
  • Cutoff time varies by carrier and VIP status
  • Shipment cannot be made on holidays or after cutoff

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