getting a cast-iron pan "machined"?

Adam Funk · 2013-11-26T13:23:24+00:00

I'm thinking of getting a double-sided cast iron griddle like this: but I've noticed that the non-ridged side has the unmachined cast iron surface, whereas a machined surface is generally considered better. Is this something that a machine shop in the UK could do easily & perhaps cheaply? What exactly would I ask when phoning up --- "can you just mill the cast surface off an iron griddle?" or something like that? Thanks.