It's been years since I last played... I remember having to buy supplies at the sable smithy, but where do you go to forge swords & stuff?

Link You can check Subetalodge for what kinds of things can be made there. These are all the items with Sword in the name, which is probably (more or less) what you're thinking of c:

Ok, thank you! I was just looking for where to go to make the weapons, but I got my answer. Genetech labs. Thank you for the suggestion, now I can go see what combinations of items can make stuff!

There are several places to assemble things beside Genetech, but most items are made there. Maps are put together in Games Treasure Maps, Frankenpie and -cluck are put together from your Inventory, and if you are Unliving or know one, the Alchove that's in Underground Shadowglen will fuse items.