2003 Forester: dismantling key

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Could someone tell me how to remove the metal key part without damaging the surrounding plastic of the fob, on a 2003 single-button fob? Thank you

[Mr B]

it moulded in.
You can swap keyfob boards if needed and transponder chip if needed .
 

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5 hours ago, Mr B said:

it moulded in.
You can swap keyfob boards if needed and transponder chip if needed .

Thanks Mr B.( I've already swapped the other bits over).