It is a place where you pay to go and paint pottery that you get to take home. I don’t know the correct tagging. Somewhat like a “paint and sip” place.
Only painting pre-made pieces.
So, how we should tag these? Seems to be a commercial business, not something run as social facility.
This one is tagged as shop=pottery + description:
hmm, it is effectively selling pottery
I applied
shop=pottery
paint_on_your_own=yes
for now, definitely better than amenity=fixme but maybe someone has a better idea
(paint_on_your_own=yes is a pure ATYL)
Maybe craft=handicraft? Although it’s usually understood as a place where someone performs a craft for you instead of doing it yourself. The wiki has a picture of someone painting a vase…
service:*= could be followed by self_service:*= to have self_service:painting= , or self_service:pottery:painting= if it’s to be uniform (can be useful when there are different products, to eliminate shop= semicolon multival). This would mean self_service:repair= can replace *:repair= , and the service:bicycle:tools= vs service:bicycle:diy= confusion. It solves the problem of self_service= being vague of what part is self-service.
This is handled fine as customizing sold products. craft= would need further clarification of what part is crafted.
These have been popping up all around my city over the last couple of years. I am interested in finding an appropriate top-level tag to describe them. shop=pottery is a good placeholder.
These places are very much like “paint n’ sip” venues, where you go to paint a painting with a little bit of guidance (and sip wine while doing so). They are usually run as sessions at set times.
What are paint n’ sip places tagged as? Is there something along the lines of “workshop” or “art studio”?
If we can’t find anything existing, then I say it would be time to invent a new leisure= or amenity= tag (I’m not sure on which would be better).
There’s a similar shop in my hometown, but in addition to letting you take home your wares, they also exhibit some of them for others to admire and learn from. So I threw together tourism=gallery training=art craft=pottery. If they didn’t exhibit anything, I’d replace tourism=gallery with amenity=training.
I think classifying it as a training center is probably overstating it a little bit, but the same could probably be said for training=dance and other arts and crafts. Something more serious would be an amenity=arts_centre or amenity=school anyways.
training=dance should offer dance lessons? But what paint-your-own-pottery and paint & sip do aren’t quite lessons.
It’s common for learning centers and studios to display the works of their students or customers. =gallery doesn’t seem needed on all of them.
Unfortunately amenity=studio is only voted as broadcast and mass media studios. Would need more work on that, and =studio to expand them.
That leaves amenity=workshop + 1 workshop=pottery workshop=pottery | Tags | OpenStreetMap Taginfo
If it’s not possible to make potteries from start, it might be less assertive than craft= . You can’t find someone to make potteries for you here. That fits how =workshop is currently used for DIY, and repairing or servicing yourself.
Indeed, this is why artist studios ended up with the less discoverable craft=atelier. amenity=workshop seems to be a very overloaded tag. Funny that it still doesn’t include auto body (work)shops. (Those go under shop=* instead, even though you can’t buy a car repair and leave with it in a reusable bag. 
)
and shop=hairdresser is not tagging for a slave market
is it weird to describe place selling services as a “shop”?
No, but shop=* is weird because many values refer to a shop (as in shopping) while many other values refer to a shop (as in a workshop). A barber shop is a kind of workshop, more or less. I bring up this conflation only for a chuckle, not to suggest some kind of fix for the situation.