NGK Plug Gapping

[V6quattro]

I always use a vise

[SteveH]

I bang them on the table, or a block of wood if the wife's watching

There's a few marks on our kitchen table that match the tip of a spark plug

[Error404]

I used a small tack hammer on the tip

[dkw_dude]

I have a set of BKR7EIX which have ~0,11 gap, too risky to knock them in 0,5 mm I believe.
Guess I need to get a set with correct gap, what is the part number for those? Its the last numbers that indirectly indicate the gap i think?

[macspring]

Remember never to try and re-gap a used plug

Just wondering why is this ?

Thanks.