unwarping a disc

I’ve got a hope rear rotor that’s ever so slightly warped – going on mrs tyred’s new build. Its probably no more warped than one or two of mine but I’ve taken so long getting this build together I figure i might as well do it right.

Does it sound worth it? I’d happily ride on it the way it is if it were for me.

If its worth it, how best to do it? I’ve got a bench vice.

Park do a specific tool but normally people use pliers or something similar to bend discs back, same as truing a wheel, do it slowly.
Or ride with it warped, mine are a bit bent and I’d rather ride than play around with them.

I use an adjustable spanner, set narrow. You have to bend the disk quite a bit more than you’d think.