The blade release should be under the heel of the blade, just below where the blade tongue hinges. You normally only need to press it when removing the blade, when snapping the blade shut it is mostly not necessary to push it. They are a bit like a door latch that self lock when closing.
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The blade release should be under the heel of the blade, just below where the blade tongue hinges. You normally only need to press it when removing the blade, when snapping the blade shut it is mostly not necessary to push it. They are a bit like a door latch that self lock when closing.