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Portal 2 Hints
How can I get the core put into Wheatley?
1 of 5: As soon as you take the core, the repulsion gel pipe will rupture and knock you down to the main floor.
2 of 5: It'll also splatter blue repulsion gel in several places.
3 of 5: You're going to need to use that to jump up to a high-up socket in Wheatley's body.
4 of 5: Moving toward Wheatley, you should be able to see the socket flashing red.
5 of 5: Run onto the blue gel spill nearest Wheatley and jump to get the core automatically attached to the socket. (There's no need to hit the "Use Item" key.)