First you have to have your chicken coop and barn upgraded. Then you talk to the blacksmith, Saibara, with an Adamantite in your bag, and you'll be able to get him to make it for you.
Yes, I would definitely recommend it. Just keep in mind that if you have the harvest sprites caring for your animals, they don't know how to use the makers, so you won't get your money's worth.
whatsername wrote:yeah that gets on my nerves. I mean it's not that hard, you just put the milk/eggs in the maker...stupid gnomes...
Yeah, they could've at least made it like Harvest Moon 3 - your wife (or farm partner) would randomly make mayonnaise or cheese. Not 100%, but better than 0%.